 His heir apparent was his eldest surviving son,
David died on 24 May 1153 and was succeeded by his grandson.Malcolm IV, known as "Malcolm the Maiden", was unmarried and had no children.His heir presumptive was his next brother

William I was unmarried at the time of his accession, so the next heir was his younger brother,
William I, known as "William the Lion" from the lion rampant he adopted as his coat of arms, died on 4 December 1214, and was succeeded by his son.