Commanded the Scottish left wing at the battle of Luncarty (c990) where the Danes were so crushingly defeated that their raids on that part of what subsequently became Perthshire, hitherto periodic and devastating, were terminated; had (Crinan), with two younger sons ((1) Grim, Thane (hereditary tenant of the Crown) of Strathearn (west of Perth) and Baille (functionary with judicial powers) of Dule, killed 1010 at Battle of Mortlach, where Malcolm II King of Scots defeated invading Norsemen; (2) Duncan, ancestor of the Irving's of Dumfries and Forbes Irvine's of Drum). [Burke's Peerage]