In 1284, he joined with other Scottish noblemen who acknowledged
Margaret, Maid of Norway, as the
heir presumptive to
King Alexander III. In 1296, he fought on the Scottish side at the
Battle of Dunbar, where he was captured and sent to the
Tower of London. After a year's confinement there he was set free on condition that he served King
Edward I of England in
Flanders. He did homage for his
manor of
Lesnes (Erith),
Kent, in 1305 but subsequently returned to Scotland, and in 1306 joined
Robert the Bruce in his rising against English overlordship, and his English possessions were forfeited. He took part in Robert's
coronation in that year. ==Execution==