 Alexander Bruce, Earl of Carrick

Alexander Bruce, Earl of Carrick (died 19 July 1333) was an illegitmate son of Edward Bruce, Earl of Carrick, younger brother of King Robert the Bruce, and Isabella, daughter of John de Strathbogie, 9th Earl of Atholl.According to "The Brus" they were married, but "The Scots Peerage" points out that this is unlikely because he did not immediately inherit his father's lands and titles,  "Freedom's Sword" also says he was illegitimate.