 Alexander II was only sixteen and unmarried at the time of his succession, and so the heiress presumptive was his elder sister,
Alexander II died on 8 July 1249 and was succeeded by his only legitimate child.Alexander III became King at the age of eight, and the heiress presumptive to the Kingdom was once again his aunt 
Alexander III, a widower since 1274, was now left with an infant girl as the only undisputed successor to his throne.In an attempt to beget a male heir, he married Yolande de Dreux on 14 October 1285, but died on 19 March 1286 of a fall from his horse.