Allan is one of Scotland's most quietly distinguished surnames — a name that arrived with the same wave of Breton companions that produced Scotland's royal house, and that in the Highlands sits at the very heart of one of the greatest MacDonald branches.
Quick answer: Allan comes from the old Breton personal name Alan, brought to Scotland in the twelfth century, with the Gaelic form Ailean. The Allan spelling is characteristically Scottish, while Allen is the usual English and Irish form. In the Highlands, Allan and MacAllan are recognised septs of Clan MacDonald of Clanranald — whose chiefs bear the patronymic Mac Mhic Ailein, "son of the son of Allan" — and the name is also counted a sept of Clan MacFarlane.
Where Does the Allan Name Come From?
The root is the personal name Alan, carried to Britain by the Breton knights who rode with the Normans, and into Scotland by the Breton-descended families whom King David I settled in the twelfth century. The most consequential of them all was Alan, father of Walter fitz Alan — the first hereditary High Steward of Scotland, whose descendants became the royal House of Stewart, a story told in our history of Clan Stewart. From that beginning the name spread widely: "son of Alan" became Allanson, MacAllan, and plain Allan among many unrelated families across the Lowlands and Highlands alike.
The spelling tends to mark the route. Allan is the characteristic Scottish form — common in Aberdeenshire, Angus, and the central Lowlands — while Allen predominates in England and Ireland, and many emigrant families shifted from one to the other at the harbour or the census desk.
Is Allan Connected to a Highland Clan?
Yes — and to a famous one. The chiefs of Clan MacDonald of Clanranald, the great branch of Clan Donald holding Moidart, Arisaig, and the Small Isles, bear the hereditary Gaelic patronymic Mac Mhic Ailein — son of the son of Allan — from Allan, a celebrated fifteenth-century chief of the line. Highland families named Allan, MacAllan, and Allanach are traditionally counted septs of Clanranald, sharing in the heritage of one of the most storied Jacobite clans — it was Clanranald men who received Bonnie Prince Charlie when he landed in 1745. Allan is also reckoned among the septs of Clan MacFarlane of Loch Lomond, so a Highland Allan family may carry either tradition.
Own a Piece of Allan Heritage
Our current family crest designs for this name carry the Allen spelling — the same ancient name in its Irish and English dress — across keepsakes including a woven blanket, an accent mug, and a Christmas ornament, each pairing the family crest with a traditional tartan background.
Popular gifts: Woven Blanket · Mug · Ornament
Frequently Asked Questions About the Allan Name
Is it Allan or Allen?
Both spellings carry the same name. Allan is the characteristic Scottish form; Allen is the usual English and Irish spelling — the form in your family records often hints at the route your ancestors travelled.
Is Allan a Scottish clan?
Allan is not a clan with its own chief, but Highland Allans and MacAllans are recognised septs of Clan MacDonald of Clanranald — whose chiefs are styled Mac Mhic Ailein, "son of the son of Allan" — and the name is also counted a sept of Clan MacFarlane.
What does the Allan name mean?
It derives from the old Breton personal name Alan, of debated meaning — often glossed as "little rock" or "handsome" — carried to Scotland in the twelfth century, with the Gaelic form Ailean.
Is Allan Scottish or Irish?
The Allan spelling is Scottish; the same name as Allen is common in Ireland and England. Many families of both spellings share the same Breton root, and family records are the way to trace which line is yours.
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