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