illiam the Lyon succeeded his brother
Malcolm in 1165. Origin of his designation a mystery. William
supported King Henry of England in his continental wars. But
being disappointed in not receiving disputed districts of
Northumberland, he invaded. On 13 Jul 1174 he was captured near
Alnwick Castle, conveyed to Normandy, and paid homage to Henry as
the price of his liberation in the Treaty of Falaise, which was
revoked by Richard I in 1189 for 10,000 marks. William founded in
1178, the Abbey of Arbroath, where he is buried. Burkes
Peerage reports buried at Aberbrothock. William had five
illegitimate children, a son and four daughters, from each of
whom sprang a claimant to the Scottish Crown in 1291-1292. {Burkes
Peerage and Chambers Biographical Dictionary} [GADD.GED]