Sir John de Mowbray Knight, Baron de Mowbray

  Noted events in his life were:

• Background Information. ¹⁴¹
John de Mowbray, Lord Mowbray, son and heir, born 29 Nov 1310, at Hovingham, Yorks, and baptized in All Saints church there. On 26 Feb 1321/2, he was imprisoned in the Tower. On the accession of Edward III, his inheritance, of which many grants had been made, was restored, and on 3 Feb 1326/7, the wardship opf Axholme was granted to Joan, Countess de Warenne of Surrey.

On 5 Apr 1327, Sir John de Mowbray was summoned for service against the Scots, and on 22 Apr was ordered, as lord of Gower, to bring his men from Wales personally to Newcastle. On 27 July, the King having taken his homage, hed had livery of all his father's lands (excepting those of the Templars), though he was still under age.

Sir John de Mowbray was summoned to Parliment from 10 Dec 1327 to 20 Nov 1360. amd frequently to Councils from 1328 to 1359. He was at Swansea on 1 Aug 1331 and Fountains on 24 Aug. From this time on, he was put on numerous commissions of array, oyer and terminer, &c. In Mar 1333, he was summoned again for service against the Scots, and in July assisted in the retaking of Berwick. He was at Oystermouth, in Gower, on 16 Aug 1334. but appears to have returned to Scotland to guard the border. In Mar 1336/7, two ships were provided for him for going to Scotland and he had remisson of 300 marks owing to the Exchequer.

In Oct 1338, Sir John de Mowbray, was ordered to take all his forces to Sussex to defend the coast and was continuously in the King's service up to the summer of 1341, being ordered from Sussex to Scotland again at Michaelmas 1339, and appointed 14 Apr 1340, Keeper of Berwick-on-Tweed for a year, and justice in the parts of Scotland occupied by the King of England. In Nov 1342, the King, who had arrived at Brest in Oct, ordered to furnish men-at-arms and archers as quickly as possible for the campaign in Brittany, and to send them on if he could not come himself. On 20 Nov he was summoned to a Council with Prince Edward, and on 13 May 1343, as lord of Gower, was order to be intendant to the Prince, who had been created Prince of Wales.

On 22 Jul 1345, Sir John de Mowbray was at Byland Abbey and in Jul 1346, he was again in garrison at Berwick, and was ordered to select and send for the French campaign 150 Welshmmen from Gower, he was also directed to send a deputy to the Parliment summoned for Sep, as he was needed on the Scottish border. At the defeat of the Scots at Nevill's Cross, Durham, 17 Oct 1346, he led "the 3^rd battle" with the Bishop of Lincoln, and was among the NOrthern magnates who received the King's thanks for their service then. With other Northern magnates he was summoned 10 Dec to Council at Wesminster on Scottish affairs, and shortly after Easter 1347, returned to Scotland on service. He was summoned to Councils again in Mar 135o, 1352 and 1353.

From 1351 onwards, Sir John de Mowbray was justice of the peace in Lincs. and other counties. He was on of five commissioners appointed in May 1352 for the defence of Yorkshir coast against an eexpected invasion, and as lord of Gower, he was ordered to provide 30 Welshmen. In the spring of 1355, as John de Mowbray, baron, he was present with his son (as John de Mowbray, nephew of the Earl of Lancaster) at the confirmation of statutes of St. Mary's Leicester. Towards the end of that year, he was in Scotland with the King, and on Jan 1335/6, witnessed the surrender by Baliol of his claims to the Scottish crown in favour of Edward. Having lost the lordship of Gower, he from about that time styled himself "lord of the Isle of Axholme and the honour of Bramber." He was one of those who took the oath that the treaty of Brétigny should be observed.

Sir John de Mowbray married, 1^stly, Joan, 6^th and youngest daugter of Henry, Earl of Lancaster. She died 7 Jul [? 1349] and is said to have been buried before the high altar at Byland.

Sir John de Mowbray married, 2^ndly Elizabeth, wodow of Hugh de Courtenay (dead 1349), son and heir of Hugh, 2nd Earl of Devon and daughter of John de Vere, Earl of Oxford, by Maud, widow of Robert Fitz Payn, and 2nd daughter of Bartholomew, Lord Badlesmere. Sir John de Mowbray died 4 Oct 1361. His widow married before 18 Jan 1368/9, Sir William de Cosynton, son and heir of Stephen de Cosynton.

~Cokayne's Complete Peerage, 2nd Edition, (Mowbray), Vol.IX, pp. 380-383

John married Joan Plantagenêt, daughter of Henry Plantagenêt 3rd Earl of Lancaster and Maud de Chaurces.¹⁴¹ (Joan Plantagenêt was born about 1320 in Grosmont Castle, Monmouthhire, Wales and died on 7 Jul 1349 in Byland Abbey, Yorkshire, England ¹⁴¹.)