- William Clapp
Death - 20 May 1555 (17 year anniversary) - Hartford, Devonshire, England - Rabbi Abraham HaLevi Minz
Death - 20 May 1530 (42 year anniversary) - Padua, Italien - Baroness Elizabeth Percy
- Baron Henry "Hotspur" De Percy
Birth - 20 May 1364 (208 year anniversary) - , Alnwick, NORTHUMBERLAND, England - Robert Clifford
- Aveline Fitzjohn
- Maurice Fitzgerald
Death - 20 May 1257 (315 year anniversary) - , Youghal Monaster, , Ireland - Elisabeth, Princess Of Austria
- Helgi "Magri" Eyvindsson
Death - 20 May 908 (664 year anniversary) - , , Eyjafjardar, Iceland
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