in 1396 he was legitimitised. In February 1397 Parliament legitimised his birth, even though he was born before his parent's marriage. He was invested as a Knight, Order of the Garter (K.G.) circa 1400. He gained the title of «i»Earl of Dorset«/i» on 5 July 1411. He was created «i»1st Duke of Exeter [England]«/i» on 18 November 1416. He gained the title of «i»Lord of Lillebonne«/i» on 1 July 1418. He gained the title of «i»Count of Harcourt«/i» on 1 July 1418.«sup»1«/sup» He has an extensive biographical entry in the «i»Dictionary of National Biography.«/i»