Biography of John Mowbray 3rd Baron Mowbray 1310-1361

Before 29th November 1310 [his father] John Mowbray 2nd Baron Mowbray [aged 24] and [his mother] Aline de Braose Baroness Mowbray were married. She by marriage Baroness Mowbray. They were third cousin once removed. He a great x 3 grandson of King Henry "Curtmantle" II of England. She a great x 3 granddaughter of King John of England.

On 29th November 1310 John Mowbray 3rd Baron Mowbray was born to [his father] John Mowbray 2nd Baron Mowbray [aged 24] and [his mother] Aline de Braose Baroness Mowbray at Hovingham. He a great x 4 grandson of King Henry "Curtmantle" II of England.

Before 26th February 1322 John Mowbray 3rd Baron Mowbray [aged 11] and Maud Holland 3rd Baroness Holand, Baroness Lovel [aged 12] were married. The marriage was later declared void. They were fourth cousins. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

Around March 1340 [his brother-in-law] Thomas Holland 1st Earl Kent [aged 26] and Joan "Fair Maid of Kent" Princess Wales [aged 11] were married in secret. It isn't clear whether the marriage was canonical given the secrecy; there were no witnesses. She twelve years old. A subsequent investigation by papal commissioners confirmed it as valid. She the daughter of Edmund of Woodstock 1st Earl Kent and Margaret Wake Countess Kent [aged 42]. They were fourth cousin once removed. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a granddaughter of King Edward I of England.

Before 24th June 1340 John Mowbray 3rd Baron Mowbray [aged 29] and Joan Plantagenet Baroness Mowbray [aged 28] were married. She by marriage Baroness Mowbray. She the daughter of Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster [aged 59] and Maud Chaworth. They were half third cousin twice removed. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great granddaughter of King Henry III of England.

On 24th June 1340 [his son] John Mowbray 4th Baron Mowbray Baron Segrave was born to John Mowbray 3rd Baron Mowbray [aged 29] and [his wife] Joan Plantagenet Baroness Mowbray [aged 28] at Epworth. He a great x 2 grandson of King Henry III of England. He married 25th March 1349 his third cousin Elizabeth Segrave 5th Baroness Segrave Baroness Mowbray, daughter of John Segrave 4th Baron Segrave and Margaret Plantagenet 1st Duchess of Norfolk, and had issue.

Around November 1340 William Montagu 2nd Earl Salisbury [aged 12] and Joan "Fair Maid of Kent" Princess Wales [aged 12] were married. She was already married albeit secretly to [his brother-in-law] Thomas Holland 1st Earl Kent [aged 26]. The subsequent investigation found her marriage to Thomas Holland 1st Earl Kent to be valid. She the daughter of Edmund of Woodstock 1st Earl Kent and Margaret Wake Countess Kent [aged 43]. He the son of William Montagu 1st Earl Salisbury [aged 39] and Catherine Grandison Countess of Salisbury [aged 36].

In or before 1344 [his son-in-law] Roger la Warr 3rd Baron de la Warr [aged 14] and [his daughter] Eleanor Mowbray were married. They were fifth cousins. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a great x 2 granddaughter of King Henry III of England.

14th December 1344 Richard Fitzalan 3rd or 10th Earl of Arundel 8th Earl of Surrey [aged 38] and Isabel Despencer Countess Arundel [aged 32] marriage annulled by Pope Clement VI on the grounds that he had never freely consented to marry Isabel. He, at this time, is believed to be having an affair with her first cousin [his sister-in-law] Eleanor [aged 26] who he married four months later.

In or before 1345 Ralph Ufford [aged 42] and [his sister-in-law] Maud Plantagenet Countess Ulster [aged 34] were married. She the daughter of [his father-in-law] Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster [aged 63] and Maud Chaworth.

On 5th April 1345 Richard Fitzalan 3rd or 10th Earl of Arundel 8th Earl of Surrey [aged 39] and [his sister-in-law] Eleanor Plantagenet Countess Arundel and Surrey [aged 26] were married at Ditton Church, Stoke Poges. She by marriage Countess Arundel. She the daughter of [his father-in-law] Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster [aged 64] and Maud Chaworth. He the son of Edmund Fitzalan 2nd or 9th Earl of Arundel and Alice Warenne Countess Arundel. They were half third cousins. He a great x 5 grandson of King John of England. She a great granddaughter of King Henry III of England.

On 22nd September 1345 [his father-in-law] Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster [aged 64] died at Leicester Castle [Map]. His son [his brother-in-law] Henry [aged 35] succeeded 4th Earl of Leicester, 4th Earl Lancaster.

In June 1347 John Warenne 7th Earl of Surrey [aged 60] died. His nephew Richard [aged 41] succeeded 8th Earl Surrey. [his sister-in-law] Eleanor Plantagenet Countess Arundel and Surrey [aged 28] by marriage Countess Surrey. Conisbrough Castle [Map] reverted to the Crown.

On 25th March 1349 [his son] John Mowbray 4th Baron Mowbray Baron Segrave [aged 8] and [his daughter-in-law] Elizabeth Segrave 5th Baroness Segrave Baroness Mowbray [aged 10] were married. She by marriage Baroness Mowbray. He by marriage Baron Segrave. She the daughter of John Segrave 4th Baron Segrave [aged 33] and Margaret Plantagenet 1st Duchess of Norfolk. They were third cousins. He a great x 2 grandson of King Henry III of England. She a great granddaughter of King Edward I of England.

On 7th July 1349 [his wife] Joan Plantagenet Baroness Mowbray [aged 37] died in Yorkshire.

In 1352 [his brother-in-law] Thomas Holland 1st Earl Kent [aged 38] was created 1st Earl Kent, 1st Baron Holand.

On 26th December 1360 [his brother-in-law] Thomas Holland 1st Earl Kent [aged 46] died. He was buried at Blackfriars Friary, Stamford [Map]. His son Thomas [aged 10] succeeded 2nd Earl Kent.

In or before 1375 John Lovell 5th Baron Lovel, Baron Holand [aged 33] and [his former wife] Maud Holland 3rd Baroness Holand, Baroness Lovel [aged 64] were married. She by marriage Baroness Lovel of Titchmarsh. He by marriage Baron Holand. The difference in their ages was 31 years; she, unusually, being older than him. They were fourth cousins. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

On 10th May 1380 [his former wife] Maud Holland 3rd Baroness Holand, Baroness Lovel [aged 70] died. Her grandson William succeeded 4th Baron Holand.

[his daughter] Eleanor Mowbray was born to John Mowbray 3rd Baron Mowbray and Joan Plantagenet Baroness Mowbray. She a great x 2 granddaughter of King Henry III of England. She married (1) her third cousin Lewis Clifford, son of Roger Clifford 5th Baron Clifford and Maud Beauchamp Baroness Clifford, and had issue (2) in or before 1344 her fifth cousin Roger la Warr 3rd Baron de la Warr, son of John la Warr 2nd Baron de la Warr and Margaret Holland, and had issue.

[his daughter] Blanche Mowbray Baroness Poynings was born to John Mowbray 3rd Baron Mowbray and Joan Plantagenet Baroness Mowbray. She a great x 2 granddaughter of King Henry III of England. She married (1) her third cousin John Segrave, son of John Segrave 4th Baron Segrave and Margaret Plantagenet 1st Duchess of Norfolk (2) before 5th July 1372 Thomas Poynings 2nd Baron Poynings, son of Michael Poynings 1st Baron Poynings and Joan Rokesley Baroness Poynings.