Clan Macewen of Otter in Argyllshire, Scotland, known as Maceoghainn in Gaelic and meaning son of Ewen or Eoghainn, descended from Ewen of Otter. The last chief of the clan was Sween Macewen who was granted the barony of Otter by James I in 1432, with the condition that the lands be passed on to the heirs of Duncan Campbell of Loch Awe, thereafter the Macewens were classed as broken men or clanless and often survived on robbery.
Arms: (ancient) Or, a lion rampant azure, ducally gorged proper.
Crest: The trunk of an oak tree with a branch sprouting forth on either side proper.
Arms: (modern) Quarterly, 1st and 4th, or, a lion rampant azure, gorged with a ducal crown proper, and on a chief of the second three garbs of the field(MacEwan); 2nd and 3rd, gules, three headless cranes argent (Finnie)
Crest: The trunk of an oak sprouting proper.
Mottoes:(1) Reviresco (I grow strong again); (2) Dieu premier servi (I serve God first).