Alexander II of Scotland (d. 1249)
Alexander II (Medieval Gaelic: Alaxandair mac Uilliam; Modern Gaelic: Alasdair mac Uilleim; 24 August 1198 – 6 July 1249) was King of Scotland from 1214 until his death. He concluded the Treaty of York (1237) which defined the boundary between England and Scotland, virtually unchanged today.