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. 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…