May 11 Mahmud Ghazan, Mongol ruler (b. 1271) died in the year 1304.
May 23 Jehan de Lescurel, French poet and composer died in the year 1304.
Jul 07 On this day in history benedict XI, [Niccolo Boccasini], Pope (1303-04), dies
Aug 17 On this day in history 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 In the year 1304 death of john de Warenne, 7th Earl of Surrey, English soldier