May 4 » Religious reformers John Wycliffe and Jan Hus are condemned as heretics at the Council of Constance.
July 6 » Jan Hus is condemned by the assembly of the council in the cathedral as a heretic and sentenced to be burned at the stake. (See Deaths section.)
August 2 » Thomas Grey is executed for participating in the Southampton Plot.
August 21 » Henry the Navigator leads Portuguese forces to victory over the Marinids at the Battle of Ceuta.
October 25 » Hundred Years' War: Henry V of England, with his lightly armoured infantry and archers, defeats the heavily armoured French cavalry in the Battle of Agincourt.
When copying data from this family tree, please include a reference to the origin: Keith Swartz, "Swartz/Rand Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/swartz-rand-family-tree/I88915250.php : accessed May 10, 2025), "Piers BUTLER 5TH BARON DUNBOYNE (????-1415)".
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