Lulach

Lulach mac Gille Coemgáin (Modern Gaelic: Lughlagh mac Gille Chomghain, known in English simply as Lulach, and nicknamed Tairbith, "the Unfortunate" and Fatuus, "the Simple-minded" or "the Foolish"; before 1033 – 17 March 1058) was King of Scots between 15 August 1057 and 17 March 1058.