May 21 In the year 1254 koenraad IV, RC-German king (1237-54), dies at 26
Nov 03 Johannes III Doukas Vatatzes, Byzantine Emperor (1222-54)/saint, dies on this day in history.
Dec 07 Innocent IV, [Sinibaldo dei Fieschi], Pope (1243-54), dies on this day in history.
May 13 In the year 1254 birth of maria of Brabant, queen of France (d. 1321)
Sep 15 On this day in history birth of marco Polo, Italian explorer (d. 1324)
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Important Dates And Events In History - Hisdates.Com