The MacEwen Story
- early 13th century
Eoghan ('Ewen of Otter') is the clan's first chief on record[4]
- 1432
Chief Swene MacEwen resigns the barony of Otter to James I[4][5][6]
- 15th century
Swene MacEwen dies without an heir; the lands pass to the Campbells[5][6]
- 1990
Clan MacEwen Society erects a memorial cairn on Loch Fyne[4]
- Mar 2025
Lord Lyon signs a warrant recognising Sir John McEwen as Chief[3]



















Clan LamontMacEwen, Lamont and MacLachlan chiefs claim a common ancestor, Anradan; their Cowal lands adjoined.
Clan MacLachlanClaims the same ancestor, Anradan; its lands lay north of MacEwen's on Loch Fyne.
Clan CampbellAfter Swene MacEwen's death the barony of Otter passed to the Campbells.