Heather: The name Alexander was used in many parts of the Ancient World. Have no idea where it originated. As to the Scots, Alexander was the anglicized version of Alasdair or Alistair. Angus Mor, s/o Donald, founder of ClanDonald (MacDonald) & gr-s/o Somerled, had a son, Alasdair, who was killed by the MacDouglas in 1299. Alasdair was founder of ClanAlasdair (MacAlasdair/MacAlister). Donald, a s/o Alasdair & attendee at Bruce's lst Parliament, and his son, Gilbert, received land in Stirling in 1330 as reward for their support of The Bruce. The family that settled at Stirling in Clackmannanshire, adopted the anglicized version of their surname.