Whose son's death brought titles to Edward III's most trusted captain?
Henry of Grosmont, 1st Duke of Lancaster Henry of Grosmont, 1st Duke of Lancaster, 4th Earl of Leicester and Lancaster, KG (c. 1310 – 23 March 1361), also Earl of Derby, was a member of the English nobility in the 14th century, and a prominent English diplomat, politician, and soldier. The son and heir of Henry, 3rd Earl of Lancaster, and Maud Chaworth, he became one of Edward III's most trusted captains in the early phases of the Hundred Years' War and distinguished himself with victory in the Battle of Auberoche. He was a founding member and the second Knight of the Order of the Garter in 1348, and in 1351 was created duke. An intelligent and reflective man, Grosmont taught himself to write and was the author of the book "Livre de seyntz medicines", a highly personal devotional treatise. He is remembered as one of the founders and early patrons of Corpus Christi College, Cambridge, which was established by two of the guilds of the town in 1352.
John FitzAlan, 14th Earl of Arundel John FitzAlan, 14th Earl of Arundel, 4th Baron Maltravers (14 February 1408 – 12 June 1435) was an English nobleman and military commander during the later phases of the Hundred Years' War. His father, John FitzAlan, 3rd Baron Maltravers, fought a long battle to lay claim to the Arundel earldom, a battle that was not finally resolved until after the father's death, when John FitzAlan the son was finally confirmed in the title in 1433.