- Francis Howard Guppy
Birth - 30 May 1883 (20 year anniversary) - Ottawa, Carleton, Ontario, Canada - Hugh McIntyre
Birth - 30 May 1879 (24 year anniversary) - Halls Mills, Lanark, Ontario, Canada - Daniel Munro
Birth - 30 May 1850 (53 year anniversary) - Darling Twp, Lanark, Ontario, Canada - Thomas HendrieHendry(Family name unknown)
Birth - 30 May 1759 (144 year anniversary) - Carluke, Lanark, Scotland - Joseph Goodenow
- Ferdinand III King Castile
Death - 30 May 1252 (651 year anniversary) - Castile, Spain - Baldwin IV Count Flanders
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