Apr 21 Henry VII, 1st Tudor king of England (1485-1509), dies at 52, Henry VIII succeeds him aged 17 May 20 Catharina Sforza, Italian duchess of Forli, dies at 45 Jun 29 Margaret Beaufort, mother of Henry VII and paternal grandmother of King Henry VIII of England, dies at 66 Jul 16 João da Nova, Portuguese Galician explorer (discovered St Helena and Ascension islands), dies at 48 or 49 Sep 28 Siwara/Sjoerd Aylva, Fries army leader (siege of Franeker) 1508 Famous Deaths by Year 1510