1392 – 15 October 1458) was a medieval English soldier, landowner, and a leading military commander during the Hundred Years' War in France.

Rempston at this time was impoverished due to a settlement made by his father in favour of his mother, which prompted him to seek fortune on the wars in France.

On 22 Nov. 1419 he was promoted to the command of Meulan; he was also granted the town of Gassay, made third chamberlain to the Duke of Bedford, and steward of the king's household.

The besiegers were thrown into confusion by a successful sortie, and Richemont was forced to retreat to Rennes, leaving much spoil in the hands of the English.

Two years later, he was present at the siege of Orléans,[8][9] and shortly after he joined the force under Sir John Fastolf which went to the relief of Beaugency, Waurin, the chronicler, being in the army.

Setting out from Paris, they were joined at Janville by Scales and Talbot, and Rempston took part in the council of war, in which, contrary to Fastolf's advice, it was decided to advance.

On late January 1441, with the siege of Tartas still ongoing, the English obtained terms for a conditional surrender: the town would capitulate if a French relief force failed to show up before 25 June 1442.

This would have been disastrous for Charles VII, who would see large amounts of land in Gascony suddenly pass to enemy control, and so he mounted an expedition, the "Journée de Tartas", to relieve the town.

[13] The French arrived on 24 June 1442; the English were vastly outnumbered (receiving little or no support from England as efforts were focused on the defense of Normandy) and withdrew, thus the agreement came to nothing.