Robert De FERRERS 4th Earl of Derby [Parents] ¹. Robert married Sybil De BRAOSE.

Supported Queen Eleanor against her husband King Henry I.  The Castles of Tutbury and Duffield were destroyed afterwards for his rebellion.

Sybil De BRAOSE [Parents] ¹ died on 5 Feb 1228. Sybil married Robert De FERRERS 4th Earl of Derby.

William De FERRERS 3rd Earl of Derby [Parents] [scrapbook] ¹ died before 1173. William married Margaret PEVERELL ².

Some authorities have Margaret Peveral being married to Robert Ferrers 2nd Earl of Derby so I went to the armorial descriptions of each Earl Ferrers' coat of arms and it is clear that William the 3rd Earl of Derby was the husband of Margaret Peveral. Robert the 2nd Earl bore the amorial of the Bruce family not that of the Peverals.

Margaret PEVERELL [Parents] ¹ was born in 1114 in Nottinghamshire, England, United Kingdom. Margaret married William De FERRERS 3rd Earl of Derby ².

William De BRAOSE 3rd Lord of Bramber [Parents] was born ¹ about 1120. He died ² about 1192. William married ³ Bertha De GLOUCESTER about 1150.

Bertha De GLOUCESTER was born ¹ about 1130. Bertha married ² William De BRAOSE 3rd Lord of Bramber about 1150.

Robert De FERRERS Junior, 2nd Earl of Derby [Parents] [scrapbook] ¹ was born in 1101. He died in 1163. Robert married Sibell De BRUCE.

An abbey was built in Merevale in 1148 by Robert de Ferrers, 2nd Earl of Derby. It was a relatively small abbey with only around 10 monks. The abbey was dissolved in October 1538, during the reign of Henry VIII and fell into ruin, but traces of it remain to the present day. One of the most significant parts to have survived is the gate chapel, now used as the parish church. The church is significant for its Cistercian stained glass, including its Jesse window (one of the most important in the British Isles), and for being the only Cistercian gate chapel to be open for regular weekly services throughout the year.

Sibell De BRUCE [Parents]. Sibell married Robert De FERRERS Junior, 2nd Earl of Derby.

William PEVERELL the Younger was born about 1080. He died about 1155.

William "the Younger" Peverel (c. 1080–1155) was the son of William Peverel. He lived in Nottingham, England.[1]
He married Avicia de Lancaster (1088 – c. 1150) in La Marche, Normandy, France. She was the daughter of William de Lancaster I and Countess Gundred de Warenne, daughter of William de Warenne, 2nd Earl of Surrey. In 1114, she bore a daughter, Margaret Peverel.[1] Another member of his family, Maude Peverel (a sister or daughter) was - by 1120 - the first wife of Robert fitz Martin.
William inherited the Honour of Peverel.
He was a principal supporter of King Stephen, and a commander in the Battle of the Standard. He was captured at The Battle of Lincoln.[2]
King Henry II dispossessed William of the Honour in 1153, for conspiring to poison the Earl of Chester - though historians speculate that the King wished to punish him for his 'wickedness and treason' in supporting King Stephen. The Earl died before he took possession of the Honour, and it stayed in the Crown for about a half century.[2][3]

William De ROS 1st Baron of Helmsley [Parents] [scrapbook] ¹ was born ² in 1255. He died ³ on 8 Aug 1316. William married ⁴ Maud De VAUX before 1287.

Maud De VAUX was born in 1261. Maud married ¹ William De ROS 1st Baron of Helmsley ² before 1287.

Robert De ROS [Parents] [scrapbook] ¹ was born ² before 1237. He died ³ on 17 May 1285. Robert married ⁴ Isabel D'AUBIGNY ⁵ in BET 5 JUN 1243 AND 17 MAY 1244.

Isabel D'AUBIGNY [Parents] ¹ was born in 1233. She died ² on 15 Jun 1301. Isabel married ³ Robert De ROS ⁴ in BET 5 JUN 1243 AND 17 MAY 1244.

William D'AUBIGNY [Parents] was born about 1176 in Belvoir, Leicestershire, England, United Kingdom. He died ¹ before 15 Sep 1242 in Norfolk, England, United Kingdom. William married ² Isabel before 1239.

Isabel was born about 1215. She died about 1285. Isabel married ¹ William D'AUBIGNY before 1239.

William De ROS [Parents] died in 1265. William married Lucy FITZHERBERT.

John De FERRERS 4th Lord of Chartley ¹ was born on 10 Aug 1331 in Southoe, Huntingdonshire. He died ² on 3 Apr 1367 from Battle of Najera. John married ³ Elizabeth De STAFFORD on 19 Oct 1349.

Elizabeth De STAFFORD [Parents] ¹ died ² on 7 Aug 1375. Elizabeth married ³ John De FERRERS 4th Lord of Chartley on 19 Oct 1349.