Historical Events Jun 13 Anglo-Portuguese Treaty of Perpetual Alliance (world's oldest still in existence) signed in London between King Edward III of England and King Ferdinand I of Portugal [1] Famous People Born in 1373 Jun 25 Johanna II, Queen of Naples (1414-35), born in Zadar, Dalmatia (d. 1435) Nov 30 Ferdinand I the Righteous, King of Aragon and Sicily, born in Medina del Campo (d. 1416) World Leaders in 1373 Edward III Famous People Who Died in 1373 Jul 23 Birgitta van Sweden, Swedish saint, dies 1372 History by Year 1374