Before Nov 1237 [his father] Richard de Clare 6th Earl Gloucester 5th Earl Hertford (age 15) and Margaret Burgh Countess Gloucester and Hertford (age 15) were married. She by marriage Countess Gloucester, Countess Hertford. She the daughter of Hubert de Burgh Count Mortain 1st Earl Kent (age 67) and Margaret Dunkeld Countess Kent (age 44). He the son of [his grandfather] Gilbert Clare 5th Earl Gloucester 4th Earl Hertford and [his grandmother] Isabel Marshal Countess Cornwall, Gloucester and Hertford (age 37). They were half third cousin once removed. He a great x 3 grandson of King Henry I "Beauclerc" England. She a great x 3 granddaughter of King Henry I "Beauclerc" England.

After Nov 1237 [his father] Richard de Clare 6th Earl Gloucester 5th Earl Hertford (age 15) and [his mother] Maud Lacy Countess Gloucester and Hertford (age 14) were married. She by marriage Countess Gloucester, Countess Hertford. She the daughter of [his grandfather] John Lacy Earl Lincoln (age 45) and [his grandmother] Margaret Quincy 3rd Countess Lincoln and Pembroke (age 31). He the son of [his grandfather] Gilbert Clare 5th Earl Gloucester 4th Earl Hertford and [his grandmother] Isabel Marshal Countess Cornwall, Gloucester and Hertford (age 37). They were third cousin once removed. He a great x 3 grandson of King Henry I "Beauclerc" England. She a great x 4 granddaughter of King Henry I "Beauclerc" England.

On 02 Sep 1243 Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford was born to Richard de Clare 6th Earl Gloucester 5th Earl Hertford (age 21) and Maud Lacy Countess Gloucester and Hertford (age 20).

In 1253 Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 9) and Alice or Alix Lusignan Countess Gloucester and Hertford (age 16) were married. She the daughter of Hugh Lusignan XI Count Lusignan VI Count La Marche II Count Angoulême and 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 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 William Ferrers 5th Earl of Derby (age 61) died. He was buried at Merevale Abbey, Warwickshire [Map]. His son Robert Ferrers 6th Earl of Derby (age 15) succeeded 6th Earl Derby. [his sister-in-law] Mary or Marie Lusignan Countess Derby (age 12) by marriage Countess Derby.

On 10 Mar 1262 [his daughter] Isabella Clare Baroness Berkeley was born to Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 18) and [his wife] Alice or Alix Lusignan Countess Gloucester and Hertford (age 26).

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

In 1264 [his daughter] Joan Clare Countess Fife was born to Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 20) and [his wife] Alice or Alix Lusignan Countess Gloucester and Hertford (age 27).

After 11 Jul 1266 [his sister-in-law] Mary or Marie Lusignan Countess Derby (deceased) died.

After 25 Aug 1270 [his brother-in-law] Hugh Lusignan XII Count Lusignan VII Count La Marche III Count Angoulême (deceased) died. His son Hugh Lusignan XIII Count Lusignan VIII Count La Marche IV Count Angoulême (age 11) succeeded XIII Count Lusignan, VIII Count La Marche, IV Count Angoulême.

On 02 Aug 1274 [his future father-in-law] King Edward I of England (age 35) and [his future mother-in-law] Eleanor of Castile Queen Consort England (age 33) arrived at Dover, Kent [Map] after an absence of four years. They travelled to London via Tonbridge Castle [Map], home of Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 30) and Reigate Castle, Surrey [Map], home of John Warenne 6th Earl of Surrey (age 43).

Before 17 Jun 1282 Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 38) was captured at Carreg Cennen Castle [Map].

On 10 Mar 1289 [his mother] Maud Lacy Countess Gloucester and Hertford (age 66) died.

In 1290 Bishop Thomas Cantilupe had a dispute with Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 46) over hunting rights in Malvern, Worcestershire.

On 30 Apr 1290 Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 46) and Joan of Acre Countess Gloucester and Hertford (age 18) were married at Clerkenwell [Map]. She by marriage Countess Gloucester, Countess Hertford. The difference in their ages was 28 years. She the daughter of King Edward I of England (age 50) and Eleanor of Castile Queen Consort England (age 49). He the son of Richard de Clare 6th Earl Gloucester 5th Earl Hertford and Maud Lacy Countess Gloucester and Hertford. He a great x 4 grandson of King Henry I "Beauclerc" England.

In May 1290 [his wife] Alice or Alix Lusignan Countess Gloucester and Hertford (age 54) died.

On 08 Jul 1290 John "Peaceful" Reginar II Duke Brabant (age 14) and [his sister-in-law] Margaret Plantagenet Duchess Brabant (age 15) were married. She the daughter of [his father-in-law] King Edward I of England (age 51) and [his mother-in-law] Eleanor of Castile Queen Consort England (age 49). He the son of John Reginar I Duke Brabant (age 37) and Margaret Dampierre Duchess Brabant. He a great x 4 grandson of King Stephen I England.

Arounnd 10 May 1291 [his son] Gilbert de Clare 8th Earl Gloucester 7th Earl Hertford was born to Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 47) and [his wife] Joan of Acre Countess Gloucester and Hertford (age 19). He a grandson of King Edward I of England.

On 03 Oct 1292 [his daughter] Eleanor Clare Baroness Zouche Mortimer was born to Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 49) and [his wife] Joan of Acre Countess Gloucester and Hertford (age 20) at Caerphilly Castle [Map]. She a granddaughter of King Edward I of England.

In 1294 John Reginar I Duke Brabant (age 41) died. His son John "Peaceful" Reginar II Duke Brabant (age 18) succeeded II Duke Brabant. [his sister-in-law] Margaret Plantagenet Duchess Brabant (age 18) by marriage Duchess Brabant.

On 16 Sep 1295 [his daughter] Elizabeth Clare Lady Verdun was born to Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 52) and [his wife] Joan of Acre Countess Gloucester and Hertford (age 23). She a granddaughter of King Edward I of England.

On 07 Dec 1295 Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 52) died at Monmouth Castle [Map]. He buried at Tewkesbury Abbey [Map]. His son [his son] Gilbert de Clare 8th Earl Gloucester 7th Earl Hertford (age 4) succeeded 8th Earl Gloucester, 7th Earl Hertford, 8th Lord Clare, 4th Lord Glamorgan.

In Jan 1297 Ralph Monthermer 1st Earl of Gloucester and Hertford (age 27) and [his former wife] Joan of Acre Countess Gloucester and Hertford (age 24) were married in secret greatly offending her father [his former father-in-law] King Edward I of England (age 57) who had been planning to marry her to Amadeus V "Great" Savoy (age 47) in March. Ralph Monthermer 1st Earl of Gloucester and Hertford was imprisoned at Bristol Castle, Gloucestershire [Map]; he was released in Aug 1297. She the daughter of King Edward I of England and [his former mother-in-law] Eleanor of Castile Queen Consort England.

On 23 Apr 1307 [his former wife] Joan of Acre Countess Gloucester and Hertford (age 35) died at Clare, Suffolk [Map].

[his daughter] Margaret Clare Countess Gloucester was born to Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford and Joan of Acre Countess Gloucester and Hertford. She a granddaughter of King Edward I of England.