- William Clapp
- Rabbi Abraham HaLevi Minz
Death - 20 May 1530 (25 year anniversary) - Padua, Italien - Baron Henry "Hotspur" De Percy
Birth - 20 May 1364 (191 year anniversary) - , Alnwick, NORTHUMBERLAND, England - Robert Clifford
- Maurice Fitzgerald
Death - 20 May 1257 (298 year anniversary) - , Youghal Monaster, , Ireland - Helgi "Magri" Eyvindsson
Death - 20 May 908 (647 year anniversary) - , , Eyjafjardar, Iceland
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