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David I (1083–1153) was a 12th-century ruler who was Prince of the Cumbrians and later King of the Scots. The youngest son of Máel Coluim mac Donnchada and Margaret, David spent most of his childhood in Scotland, but was exiled to England in 1093. At some point, perhaps after 1100, he became a hanger-on at the court of King Henry I and experienced long exposure to Norman and Anglo-French culture. When David's brother Alexander I of Scotland died in 1124, David chose, with the backing of Henry I, to take the Kingdom of Scotland (Alba) for himself. He 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 his Kingdom. After the death of his former patron Henry I, David supported the claims of Henry's daughter and his own niece, the former Empress-consort, Matilda, to the throne of England; in the process, he came into conflict with King Stephen and was able to expand his power in northern England, despite his defeat at the Battle of the Standard in 1138. The term "Davidian Revolution" is used by many scholars to summarise the changes which took place in the Kingdom of Scotland during his reign.