 Robert de Ferrers, 6th Earl of Derby

Robert de Ferrers, 6th Earl of Derby (1239–1279) was an English nobleman.He was born at Tutbury Castle in Staffordshire, England, the son of William de Ferrers, 5th Earl of Derby, by his second wife Margaret de Quincy (born 1218), a daughter of Roger de Quincy, 2nd Earl of Winchester and Helen of Galloway.