The Battle of Bloody Bay, c. 1481: The Lordship of the Isles Turns on Itself

At a glance

Date	c. 1481–1483 (disputed)
War	MacDonald civil war
Where	Sound of Mull, off Tobermory
Winner	Angus Óg MacDonald
Loser	John, Lord of the Isles (his father)
Type	Sea battle of galleys

Background

This was Clan Donald tearing at itself. After James III stripped John MacDonald, Lord of the Isles, of the Earldom of Ross in 1476 — punishment for his secret treaty with England — John’s son Angus Óg rose against his own father for the leadership of the Lordship.

The battle

It was fought at sea, birlinn against birlinn, in the sound north of Tobermory. Angus Óg won decisively; his father’s naval commander Hector Odhar Maclean was taken, and Angus held the Lordship until his murder around 1490.

Numbers & legend: the tradition that half the clan fleet was sunk and that this crippled the Lordship is exactly that — tradition; no reliable casualty count survives, and even the year ranges across 1480–1483. The MacLeod Fairy Flag appears here too, in the Bannatyne Manuscript’s claim that its bearer and twelve guardians fell — clan-manuscript lore, not record.

Why it mattered

Victory or not, the fighting bled the Lordship of the Isles at the worst moment. Within a dozen years, in 1493, the Crown forfeited and abolished the Lordship for good. Bloody Bay is remembered as a milestone in that long decline.

The clans & people involved

Clan MacDonald — on both sides: Angus Óg (with Clanranach/Sleat/Keppoch and the MacLeods of Lewis) against his father (with Maclean, MacNeil and the MacLeods of Dunvegan).
The two MacLeod branches are traditionally split across the two fleets.

Sources

Battle of Bloody Bay — Wikipedia; the Bannatyne Manuscript (clan tradition).

📝 Kevin’s note: a photo of the Sound of Mull off Tobermory — add from our own visit.

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