David I (circa 1084–1153), sixth son of Malcolm III, reigned 1124–53. In 1136 he invaded England in support of his niece Matilda’s claim to the throne, but was defeated at the Battle of the Standard in 1138.
David II (1324–71), son of Robert the Bruce, reigned 1329–71. His reign witnessed a renewal of fighting with England, with Edward III supporting the pretender Edward de Baliol. His death without issue left the throne to the Stuarts.