Dervorguilla of Galloway (c. 1210 – 28 January 1290) was a "lady of substance" in 13th-century Scotland. She was the wife, from 1223, of John de Balliol and the mother of King John Balliol.
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Family
Dervorguilla was one of the three daughters and heiresses of the Gaelic prince Alan, Lord of Galloway. Her name is a Latinisation of the Gaelic Dearbhfhorghaill. She was born to Alan's second wife Margaret of Huntingdon, who was the eldest daughter of David, Earl of Huntingdon, and Matilda (or Maud) of Chester. David, in turn, was the youngest brother of two kings of Scotland, Malcolm IV and William the Lion. Thus, through her mother, Dervorguilla was descended from the kings of Scotland, including David I.
Dervorguilla's father died in 1234 without a legitimate son (he had an illegitimate son Thomas). According to both Anglo-Norman feudal laws and ancient Gaelic customs, Dervorguilla was one of his heiresses, her two sisters Helen and Christina being elder and therefore senior. Because of this, Dervorguilla bequeathed lands in Galloway to her descendants, the Balliol and the Comyns.





