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