Clan Leask: A Legacy of Slains, Buchan and Growing by Virtue
Introduction
Clan Leask is a historic Scottish clan rooted especially in Aberdeenshire, Buchan, Slains, Pitlurg, and the north-east Lowland world of Scotland.
The clan motto is:
“Virtute Cresco”
“I grow by virtue.”
The clan crest is:
A crescent Argent.
In simpler terms, this is a silver crescent.
The clan is associated with the lands of Leask, now commonly linked with Pitlurg in the parish of Slains, Aberdeenshire. ScotsConnection states that the surname is said to originate from the lands of Leask, now Pitlurg, in Slains parish.
The modern chief is widely listed as:
Jonathan Leask of that Ilk
Chief of Clan Leask
The Clan Leask family site states that the Clan Leask Society was established in 1982, and that in 1968 the Lord Lyon recognised the present chief’s grandfather as Chief of Clan Leask.
This article explores the history, people, heritage, tartans, crest, motto, lands, branches and modern legacy of Clan Leask.
Chapter I: Origins of Clan Leask
The origin of the name Leask is debated.
One strong tradition connects the name with the lands of Leask in Aberdeenshire, now associated with Pitlurg in the parish of Slains.
Other theories suggest possible continental or ancient roots. ScotsConnection notes suggestions that the name may derive from Liscus, chief of the Haedui, a tribe of Gauls mentioned in classical history, or from a Norman family called de Lesque connected with Boulogne.
Historic spellings and forms include:
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Leask
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Lask
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Lesk
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Liske
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Leiske
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de Lesque
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Leask of that Ilk
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Leask of Pitlurg
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Leask of Slains
Clan Leask is best understood as a north-east Scottish clan, rooted in the Lowland-Buchan landscape of Aberdeenshire rather than the western Highland world of island galleys and mountain glens.
Its motto gives the clan its moral centre:
Virtute Cresco — I grow by virtue.
That is not a motto of conquest alone. It is a motto of character, increase, merit and honour.
Chapter II: Clan Territory and Ancestral Lands
Clan Leask’s historic territory includes:
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Aberdeenshire
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Buchan
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Slains
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Pitlurg
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Ellon district
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The north-east coast
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The old lands of Leask
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The wider Scottish diaspora
The most important territorial association is:
The lands of Leask / Pitlurg, Slains, Aberdeenshire
ScotsConnection identifies these lands as the likely source of the surname.
This region belongs to the north-east of Scotland: a land of farming, fishing, coastal roads, old kirks, castle ruins, lairdly houses, powerful neighbours and hard granite history.
Clan Leask’s homeland is not a romantic western glen. It is a Buchan and Aberdeenshire clan landscape — open, wind-cut, agricultural, coastal and deeply tied to the old parish system.
Chapter III: Important People of Clan Leask
The Early Leasks of Aberdeenshire
The early Leasks took their identity from the lands associated with the name in Slains parish, Aberdeenshire.
Their story belongs to the north-east world of landholding, local power, parish records and regional loyalty.
Leask of that Ilk
The phrase “of that Ilk” means that the family held lands bearing the same name as the surname.
For Clan Leask, Leask of that Ilk represents the old territorial identity of the family.
The Modern Leask Chiefly Line
The modern revival of Clan Leask’s recognised chiefship is an important part of the clan’s story.
The Clan Leask family site states that, with help from prominent Leasks including Lieutenant General Sir Henry Leask, some of the estates were bought back in 1963. It also states that in 1968, the Lord Lyon recognised the present chief’s grandfather as Chief of Clan Leask.
This makes Clan Leask a strong example of a clan whose modern identity was actively revived and organised in the 20th century.
Jonathan Leask of that Ilk
The modern chief is widely identified as:
Jonathan Leask of that Ilk
Chief of Clan Leask
Modern clan guides list Jonathan Leask of that Ilk as the clan chief.
Clan Leask Society
The Clan Leask Society was established in 1982, helping bring together Leask descendants and supporters across the world.
Its existence is central to modern Leask identity, especially for descendants in the Scottish diaspora.
Chapter IV: Lands, Houses and Historic Sites
The Lands of Leask
The old lands of Leask are the origin point of the clan’s territorial identity.
They are now generally associated with Pitlurg in the parish of Slains, Aberdeenshire.
For Clan Leask, these lands represent:
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Name origin
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Territorial identity
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Aberdeenshire roots
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Buchan heritage
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The old status of Leask of that Ilk
Pitlurg
Pitlurg is important because it is commonly identified with the old Leask lands.
For modern Leask descendants, Pitlurg and Slains are among the key places to explore for ancestral geography.
Slains
Slains parish is central to Leask history.
The parish is also connected with the dramatic coast of Buchan and the old world of north-east Scottish families.
Buchan
Buchan gives Clan Leask its wider regional identity.
This part of Aberdeenshire has produced many strong families and has its own character: maritime, agricultural, Doric-speaking, locally proud and historically distinct.
The Archive as Stronghold
Clan Leask does not have the same internationally famous fortress identity as clans such as Campbell, Gordon, Keith or Irvine.
For Leask descendants, the strongest historical “strongholds” may be:
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Parish registers
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Estate records
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Heraldic records
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Slains records
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Aberdeenshire archives
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Clan society records
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Scottish Register of Tartans entries
The Leask story is therefore a mixture of land, surname, tartan, heraldry and modern revival.
Chapter V: Clan Events and Historical Themes
Clan Leask history is shaped by north-east landholding, uncertain origins, heraldic identity, loss and recovery of estate links, and modern clan organisation.
Territorial Origin in Aberdeenshire
The key foundation of Clan Leask is the connection to the lands of Leask in the parish of Slains.
This territorial root gives the clan its Scottish identity.
Possible Continental Traditions
The proposed links to Liscus, the Haedui, or to the Norman de Lesque tradition should be treated as interesting origin theories rather than settled fact.
For professional writing, the best wording is:
The name is most securely associated with Aberdeenshire lands, while older traditions suggest possible continental or Norman explanations.
Modern Estate Recovery
A major modern event was the partial recovery of Leask-related estate identity in 1963, helped by notable Leask family members.
This helped prepare the way for modern chiefship recognition.
Recognition by the Lord Lyon — 1968
In 1968, the Lord Lyon recognised the grandfather of the present chief as Chief of Clan Leask.
This is a highly significant event because recognition by the Lord Lyon gives formal standing within Scottish heraldic and clan tradition.
Founding of Clan Leask Society — 1982
The Clan Leask Society was established in 1982.
This gave the clan a modern organisation for history, genealogy, gatherings and diaspora identity.
Chapter VI: Clan Crest, Motto and Badge
Clan Crest
The Leask crest is:
A crescent Argent.
This means a silver crescent.
ScotsConnection gives the Leask crest as a crescent, Argent.
The crescent suggests:
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Growth
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Renewal
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Increase
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Hope
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Light in darkness
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Rising fortune
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A family growing through virtue
It pairs beautifully with the motto Virtute Cresco.
Clan Motto
The clan motto is:
“Virtute Cresco”
This is translated as:
“I grow by virtue”
or
“I increase by virtue.”
ScotsConnection gives the motto as Virtute Cresco, translated as I increase by virtue, while ScotlandShop gives I grow by virtue.
The meaning is clear:
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Character creates growth
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Honour brings increase
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Virtue is the foundation of strength
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A name rises through conduct
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True nobility comes through merit
For Clan Leask, the motto is calm, moral and dignified.
Clan Badge
A widely agreed plant badge for Clan Leask is not consistently recorded in the major clan references I found.
For accuracy, the strongest Leask symbols are:
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The silver crescent
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The motto “Virtute Cresco”
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The Leask tartan
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The lands of Leask / Pitlurg
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Slains
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Aberdeenshire
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The modern chiefship and Clan Leask Society
Chapter VII: Clan Tartans
Clan Leask has a recognised tartan.
Leask Tartan
The Leask tartan is recorded by the Scottish Register of Tartans under reference 2076.
This gives modern Leask descendants a recognised tartan identity.
Leask Ancient and Modern Tartans
Modern tartan suppliers commonly offer Leask tartans in:
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Ancient
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Modern
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Weathered
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Muted
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Dress variants where available
The usual distinction is dye tone:
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Ancient colours are softer and lighter.
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Modern colours are deeper and stronger.
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Weathered colours are more muted and aged.
The Meaning of Leask Tartan Today
For modern Leask descendants, tartan represents:
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Aberdeenshire roots
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Slains and Pitlurg
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The motto “I grow by virtue”
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The silver crescent crest
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Family pride
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Diaspora identity
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The modern revival of Clan Leask
The Leask tartan gives this north-east Scottish clan a visible and wearable identity.
Chapter VIII: Heritage, Identity and Clan Traditions
Clan Leask represents a Scottish identity built on land, virtue, revival and north-east heritage.
Its story includes:
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The lands of Leask in Slains parish
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Pitlurg and Buchan associations
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Possible Norman or continental origin traditions
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The silver crescent crest
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The motto “Virtute Cresco”
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The Leask tartan
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Recognition of chiefship in 1968
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The Clan Leask Society, founded in 1982
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A modern recognised chief
Associated names and spellings include:
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Leask
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Lask
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Lesk
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Liske
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Leiske
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de Lesque
The Leask story is not a loud battlefield saga. It is a story of old lands, uncertain ancient roots, quiet endurance, heraldic dignity and modern restoration.
Its power lies in one elegant phrase:
I grow by virtue.
Chapter IX: Clan Leask Today
Today, Clan Leask is a recognised Scottish clan with a modern chief and organised clan society.
The current chief is widely identified as:
Jonathan Leask of that Ilk
Chief of Clan Leask
Modern Clan Leask identity can be found through:
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Clan Leask Society
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Family history research
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Tartan wearing
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Aberdeenshire genealogy
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Study of Slains and Pitlurg
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Scottish heritage events
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Highland games
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Diaspora communities across the world
The clan stands today as a symbol of virtue, north-east roots, family revival, crescent symbolism and Scottish pride.
Chapter X: Legacy of Clan Leask
The story of Clan Leask begins in Aberdeenshire, in the old lands of Leask near Slains.
From those lands came a name, a crest, a motto, a tartan and a modern clan identity restored through dedication and memory.
Its crest, the silver crescent, speaks of increase, renewal and rising fortune.
Its motto gives the clan its voice:
Virtute Cresco — I grow by virtue.
That phrase captures the Leask spirit: rise through character, grow through honour, endure through merit.
From Slains to Pitlurg, from Buchan to descendants across the world, Clan Leask continues to carry its history forward.
Its legacy is written in tartan, crescents, Aberdeenshire records, clan society work, family names and the pride of those who still honour the name.
Tartan Time Machine Closing Paragraph
At Tartan Time Machine, we bring Scotland’s past into the present by exploring the clans, castles, battles, kirkyards, legends and forgotten stories that shaped the nation.
Clan Leask is one chapter in that greater story — a story of Aberdeenshire roots, Slains lands, silver crescents, tartans, modern revival and the noble motto: I grow by virtue.
Discover more Scottish history, clan stories, castle features and heritage content at:
www.tartantimemachine.com