May 11 Mahmud Ghazan, Mongol ruler (b. 1271) died in the year 1304.
May 23 In the year 1304 death of jehan de Lescurel, French poet and composer
Jul 07 In the year 1304 benedict XI, [Niccolo Boccasini], Pope (1303-04), dies
Aug 17 In the year 1304 death of emperor Go-Fukakusa of Japan (b. 1243)
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 on this day in history.