| John Grey | |
| Earl of Tankerville Lord of Powys, jure uxoris | |
| Father: | Sir Thomas Grey |
| Mother: | Joan Mowbray |
| Spouse: | Joan de Cherleton |
| Issue: | Henry Grey, 2nd Earl of Tankerville |
| Birth Date: | after 1384 |
| Death Date: | 22 March 1421 |
John Grey, 1st Earl of Tankerville jure uxoris 6th Lord of Powys (after 1384 – 22 March 1421), KG, was an English peer who served with distinction in the Hundred Years' War between England and France under King Henry V.
John Grey was the second son of Sir Thomas Grey (1359– 26 November 1400), of Berwick and Chillingham Castle, by his wife Joan Mowbray (d. 1410), a daughter of John de Mowbray, 4th Baron Mowbray by Elizabeth de Segrave.[1]
Sir Thomas Grey (1343/4) of Heton, Islandshire in Northumberland, married a certain Agnes, a lady of unrecorded parentage. He fought in many battles for the English king on the Marches of the Scottish borders. He was succeeded by his son:
Between 1408 and 1413 Henry V granted Grey three annuities, and on 8 August 1415 gave him the forfeited estates of his brother, Sir Thomas Grey, executed for his part in the Southampton Plot.[8]
Grey fought at Agincourt in 1415. On 1 August 1417 Henry V launched his second invasion of Normandy,[9] and in that year Grey was Captain of Mortagne in October 1417,[10] and was with the King at the siege of Caen,[11] where his valiant conduct caused the King to name him a Knight of the Garter. Henry V granted the castle and seigneurie of Tilly in Normandy in November 1417, recently forfeited by Sir William Harcourt,[10] a supporter of the King's enemies.[11]
Grey was subsequently sent with a guard to Powys to bring the recently captured Lollard leader, Sir John Oldcastle, before Parliament.[11]
In 1419 he was again in France as Captain of Mantes,[10] and on 31 January 1419 was granted the comté of Tancarville in Normandy[10] to hold by grand sergeanty of delivery of a bascinet helmet at the Castle of Roan on Saint George's Day each year.[11] Grey's continued service in the French wars earned him further grants, and he was made governor of the Castle of Tournay.[11] In 1418 or on 31 January 1419 he was created a Knight of the Garter.[11] In 1420 he was Captain of Harfleur,[10] and by that date was one of the leading landowners in Normandy.[8]
On 22 March 1420/1, while fording a river near the Chateau de Beaufort at the Battle of Baugé, Grey, Thomas of Lancaster, 1st Duke of Clarence, and many other of the English nobility were slain by a Franco-Scottish force, having incautiously engaged the enemy without proper preparation and with no archers in support.[12]
In 1418 Grey married Joan de Cherleton, 6th Lord of Powys (c. 1400 – 17 September 1425), daughter and co-heiress of Edward Charleton, 5th Baron Cherleton, by his wife Eleanor Holland, widow of Roger Mortimer, 4th Earl of March.[13] In his wife's right, Grey succeeded to the title of Lord Powis with its estates, including one moiety of Powis Castle, the other half having been inherited by his wife's sister Joyce de Cherleton, wife of John Tiptoft, 1st Baron Tiptoft. This arrangement remained in place until in the 1530s Joyce's great-grandson John Sutton, 3rd Baron Dudley sold the Tiptoft moiety of Powis Castle to his nephew, the 3rd and last Baron Grey of Powis.[14] Joan de Cherleton survived her husband and in her widowhood in 1425 became heiress to her step-brother, Edmund Mortimer, 5th Earl of March,[10] who had earlier been the focus of the Southampton Plot. By his wife he had a son and only child and heir: