| Gaelic form | Seumas |
| Pronunciation | SHAY-mus |
| Meaning | Supplanter; the one who follows |
| Language origin | Scottish Gaelic |
Seumas is the Scottish Gaelic form of James, from the Latin Jacobus and ultimately the Hebrew Ya'akov (Jacob). It arrived in Scotland via Norman French after the eleventh century and became thoroughly Gaelicised. The name gave rise to Hamish (from its vocative case Sheumais) and is directly equivalent to the Irish form Séamus. Six Scottish kings were named James, making this one of the most prestigious names in Scottish history.
The Stuart monarchs — who reigned in Scotland from 1371 and later in England — were all named James in English. In Gaelic they were Seumas. The Jacobite cause — from Latin Jacobus — was literally the cause of Seumas/James: the restoration of the Stuart (Stewart) kings. Highland Gaelic speakers who fought at Killiecrankie, Sheriffmuir, and Culloden were fighting for their Seumas. The name carries that weight of loyalty and loss.
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Find Your Scottish Clan → Read Love Scotland — FreeSeumas is found across all Highland clans, but particularly in those that were Jacobite in sympathy — Cameron, MacDonald, MacDonell, Fraser, Stewart/Stuart, and Gordon. The name is also strongly associated with Clan MacSeumas (later anglicised as Jameson).
Seumas Mòr na Feinn — the legendary Highland warrior Fingal's companion in Ossianic poetry. Séamus Heaney (Irish form) — Nobel Prize-winning poet. James (Seumas) Hogg — the Ettrick Shepherd, Scottish poet.
Seumas and its anglicised forms (James, Hamish, Shamus) are among the most common names in the Scottish diaspora. In Nova Scotia's Gaelic-speaking communities, Seumas remained in use as the Gaelic form while James was used for official documents — giving genealogists the interesting problem of finding both names for the same person.