Political and military events in Scotland during the reign of David I are the events which took place in Scotland during David I of Scotland's reign as King of Scots, from 1124 to 1153. When his brother Alexander I of Scotland died in 1124, David chose, with the backing of Henry I of England, to take the Kingdom of Alba for himself. David was forced to engage in warfare against his rival and nephew, Máel Coluim mac Alaxandair. Subduing the latter took David ten years, and involved the destruction of Óengus, mormaer of Moray. David's victory allowed him to expand his control over more distant regions theoretically part of the Kingdom. In this he was largely successful, although he failed to bring the Earldom of Orkney into his kingdom.