Elizabeth Stewart appears to have died before the end of 1288 , possibly in childbirth .
Douglas had married Elizabeth , daughter of Alexander Stewart , 4th High Steward of Scotland , by whom he had his eldest son James .
daughter   appears to have died before the end of 1288 , possibly in childbirth .
Douglas had married Elizabeth , daughter of Alexander Stewart , 4th High Steward of Scotland , by whom he had his eldest son James .