Robert de Ferriers, 4th Earl of Derby
Rebelled against Henry II and sacked Nottingham.He was soon after reduced to submission and was forced to surrender to the crown his castles of Tutbury and Duffield, which were demolished by order of the King.
Robert de Ferriers, 2nd Earl of Derby
A nobleman distinguished for his generosity to the church. According to Burke's Dormant and Extinct Peerages, he had his son William by his daughter Petronilla, who was married to Henry de Stafford.
Was granted Tutbury Castle, in Staffordshire by William the Conqueror, along with extensive possessions in other shires, of which 114 manors were in Derbyshire. Henry must have been of considerable rank, not only because of his enormous lands, but because he was appointed by William the Conqueror to make the initial survey of England. He was the founder of Tutbury Priory
A Norman.