- Francis Howard Guppy
Birth - 30 May 1883 (49 year anniversary) - Ottawa, Carleton, Ontario, Canada - Hugh McIntyre
Birth - 30 May 1879 (53 year anniversary) - Halls Mills, Lanark, Ontario, Canada - Daniel Munro
Birth - 30 May 1850 (82 year anniversary) - Darling Twp, Lanark, Ontario, Canada - Thomas HendrieHendry(Family name unknown)
Birth - 30 May 1759 (173 year anniversary) - Carluke, Lanark, Scotland - Joseph Goodenow
- Ferdinand III King Castile
Death - 30 May 1252 (680 year anniversary) - Castile, Spain - Baldwin IV Count Flanders
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