On 25 Oct 1415 at the Battle of Agincourt the English included: Richard Beauchamp 13th Earl Warwick (33) , William Botreaux 3rd Baron Botreaux (26) , William Bourchier 1st Count Eu (41) , John Cornwall 1st Baron Fanhope, 1st Baron Milbroke (51) , Edward Courtenay (30) , Ralph Cromwell 3rd Baron Cromwell (12) , Thomas Dutton (19) , Edmund Ferrers 5th Baron Ferrers Chartley (29) , Roger Fiennes (31) , Henry Fitzhugh 3rd Baron Fitzhugh (57) , John Grey (28) , John Grey 1st Earl Tankerville (31) , William Harrington (42) as the King's Standard Bearer, Walter Hungerford 1st Baron Hungerford (37) , Piers Legh (wounded), Alfred Longford, Thomas Montagu 1st Count Perche, 4th Earl Salisbury (27) , Thomas Morley 6th Baron Marshal, 5th Baron Morley (22) , John Rodney, Richard Scrope 3rd Baron Scrope Bolton (22) , Robert Strelley (18) , James Tuchet 5th Baron Audley Heighley (17) , Robert Umfraville (52) , Thomas West 2nd Baron West (24) , Robert Willoughby 6th Baron Willoughby Eresby (30) . Thomas Erpingham commanded the archers. Thomas Rempston was present. Thomas Strickland carried the Banner of St George.
In 1419 William Bourchier 1st Count Eu (45) was appointed as Captain Dieppe
In 1419 William Bourchier 1st Count Eu (45) was appointed 1st Count Eu
On 28 May 1420 William Bourchier 1st Count Eu (46) died at Troyes