Thomas, Lord Scales, was born about 1399. In 1422 Thomas crossed to Normandy with a company of men-at-arms and served under John, Duke of Bedford.

In 1423 he was captain of Verneuil with a salary of 2,461 livres. In 1424-1425 Thomas campaigned with Fastolf in Maine and was made Knight of the Garter. In 1427 he took part in the siege of Pontorson.

He was captain of Saint Jacques de Beuvron and was defeated on April 17, 1427, at Bas-Courtils, between Pontorson and Avranches. He is still cited as captain of Pontorson.

On December 16, 1428, we find him as lieutenant of the King in Orléanais and he received 3,000 livres to lead an army against Orleans. Jeanne, in her letter of March 22, 1429, designates him as one of Bedford's lieutenants.

He was taken prisoner and put at ransom while he was trying to aid Orléans, and was again defeated at Beaugency and taken prisoner at Patay (June 18, 1429).

He was a captain with men-at-arms at Louviers (order of September 28, 1430). In 1431 we see him among the English chiefs sent by Bedford to Jean V, Duke of Brittany, to fight the duc d'Alençon.

He was captain of Domfort in 1433 and was named guard and captain of Saint Lô in 1435. He is described as seneschal of Normandy before 1436, and was in that year captain of Rouen.

On August 14, 1437, as seneschal of Normandy he had under his orders 260 men-at-arms and 780 archers.

On September 26, 1441, we find a payment to Thomas, Lord of Scales, the wages of the garrison of Granville. Numerous delays were granted to him to pay homage for the lands that he held by royal grant. He devoted all his life to the war in France and to the dynasty of Lancaster for which he died in 1460.