Biography of Robert Ferrers 6th Earl of Derby 1239-1279

Before 1226 [his father] William Ferrers 5th Earl of Derby (age 32) and [his step-mother] Sibyl Marshal (age 24) were married. She the daughter of William Marshal 1st Earl Pembroke and Isabel Clare Countess Pembroke. He the son of [his grandfather] William Ferrers 4th Earl of Derby (age 57) and [his grandmother] Agnes Gernon Countess Derby. He a great x 3 grandson of King Henry I "Beauclerc" England.

In 1238 [his father] William Ferrers 5th Earl of Derby (age 45) and [his mother] Margaret Quincy Countess Derby were married. She the daughter of [his grandfather] Roger de Quincy 2nd Earl Winchester (age 43) and [his grandmother] Helen Galloway Countess Winchester. He the son of [his grandfather] William Ferrers 4th Earl of Derby (age 70) and [his grandmother] Agnes Gernon Countess Derby. They were first cousin twice removed. He a great x 3 grandson of King Henry I "Beauclerc" England. She a great x 5 granddaughter of King Henry I "Beauclerc" England.

In 1239 Robert Ferrers 6th Earl of Derby was born to William Ferrers 5th Earl of Derby (age 46) and Margaret Quincy Countess Derby at Tutbury Castle, Staffordshire [Map]. Coefficient of inbreeding 1.65%.

In 1249 Robert Ferrers 6th Earl of Derby (age 10) and Mary or Marie Lusignan Countess Derby (age 7) were married. She the daughter of Hugh Lusignan XI Count Lusignan VI Count La Marche II Count Angoulême (age 28) and Yolande Capet Countess Lusignan, La Marche and Angoulême (age 30). He the son of William Ferrers 5th Earl of Derby (age 56) and Margaret Quincy Countess Derby. They were fourth cousins. He a great x 4 grandson of King Henry I "Beauclerc" England. She a great x 5 granddaughter of King Henry I "Beauclerc" England.

On 06 Apr 1250 [his father-in-law] Hugh Lusignan XI Count Lusignan VI Count La Marche II Count Angoulême (age 29) died. His son [his brother-in-law] Hugh (age 15) succeeded XII Count Lusignan, VII Count La Marche, III Count Angoulême.

In 1253 Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 9) and [his sister-in-law] Alice or Alix Lusignan Countess Gloucester and Hertford (age 16) were married. She the daughter of [his father-in-law] Hugh Lusignan XI Count Lusignan VI Count La Marche II Count Angoulême and [his mother-in-law] Yolande Capet Countess Lusignan, La Marche and Angoulême (age 34). He the son of Richard de Clare 6th Earl Gloucester 5th Earl Hertford (age 30) and Maud Lacy Countess Gloucester and Hertford (age 29). He a great x 4 grandson of King Henry I "Beauclerc" England. She a great x 5 granddaughter of King Henry I "Beauclerc" England.

On 29 Jan 1254 [his brother-in-law] Hugh Lusignan XII Count Lusignan VII Count La Marche III Count Angoulême (age 19) and Jeanne Fougères Countess Lusignan Countess La Marche and Angoulême were married. She by marriage Countess Lusignan, Countess La Marche, Countess Angoulême. He the son of [his father-in-law] Hugh Lusignan XI Count Lusignan VI Count La Marche II Count Angoulême and [his mother-in-law] Yolande Capet Countess Lusignan, La Marche and Angoulême (age 35). He a great x 5 grandson of King Henry I "Beauclerc" England.

On 28 Mar 1254 [his father] William Ferrers 5th Earl of Derby (age 61) died. He was buried at Merevale Abbey, Warwickshire [Map]. His son Robert (age 15) succeeded 6th Earl Derby. [his wife] Mary or Marie Lusignan Countess Derby (age 12) by marriage Countess Derby.

On 14 Jul 1262 Richard de Clare 6th Earl Gloucester 5th Earl Hertford (age 39) died. His son Gilbert (age 18) succeeded 7th Earl Gloucester, 6th Earl Hertford, 9th Lord Clare, 3rd Lord Glamorgan. [his sister-in-law] Alice or Alix Lusignan Countess Gloucester and Hertford (age 26) by marriage Countess Gloucester, Countess Hertford.

After 15 May 1266 Robert Ferrers 6th Earl of Derby (age 27) was imprisoned at Windsor Castle [Map].

After 11 Jul 1266 [his former wife] Mary or Marie Lusignan Countess Derby (deceased) died.

On 26 Jun 1269 Robert Ferrers 6th Earl of Derby (age 30) and Eleanor Bohun Countess Derby (age 26) were married. She by marriage Countess Derby. He the son of William Ferrers 5th Earl of Derby and Margaret Quincy Countess Derby. They were third cousin once removed. He a great x 4 grandson of King Henry I "Beauclerc" England.

On 20 Jun 1271 [his son] John Ferrers 1st Baron Ferrers of Chartley was born to Robert Ferrers 6th Earl of Derby (age 32) and [his wife] Eleanor Bohun Countess Derby (age 28) at Cardiff.

In 1275 [his brother-in-law] Humphrey Bohun 3rd Earl Hereford 2nd Earl Essex (age 26) and Maud Fiennes Countess Essex and Hereford (age 21) were married. She by marriage Countess Essex, Countess Hereford.

On 24 Sep 1275 Humphrey Bohun 2nd Earl Hereford 1st Earl Essex (age 71) died at Kenilworth Castle [Map]. He was buried at Llanthony Secunda Priory, Gloucestershire [Map]. His grandson [his brother-in-law] Humphrey (age 26) succeeded 3rd Earl Hereford, 2nd Earl Essex.

Before 27 Apr 1279 Robert Ferrers 6th Earl of Derby (age 40) died. Earl Derby extinct. He was buried at St Thomas' Priory, Stafford [Map].

In 1314 [his former wife] Eleanor Bohun Countess Derby (age 71) died.

[his daughter] Eleanor Ferrers Baroness Fitzwalter was born to Robert Ferrers 6th Earl of Derby and Eleanor Bohun Countess Derby.