May 11 In the year 1304 death of mahmud Ghazan, Mongol ruler (b. 1271)
May 23 In the year 1304 death of jehan de Lescurel, French poet and composer
Jul 07 Benedict XI, [Niccolo Boccasini], Pope (1303-04), dies on this day in history.
Aug 17 Emperor Go-Fukakusa of Japan (b. 1243) died on this day in history.
Aug 22 John II, Count of Hainaut (b. 1247) died in the year 1304.
Sep 27 John de Warenne, 7th Earl of Surrey, English soldier died in the year 1304.