Margaret Peverel
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Margaret Peverel (born c.1114) was a 12th century Countess of Derby , who lived at Tutbury Castle in the English county of Staffordshire.
Margaret was the daughter of William Peverel the Younger of Peveril Castle in Derbyshire and his wife, Avicia de Lancaster. Her grandfather was William Peverel. She married Robert Ferrers and thus became Countess of Derby. She was the mother of William de Ferrers, 3rd Earl of Derby, Walkelin de Derby and a daughter, Petronella.