Historical Events Apr 18 Bona Sforza is crowned queen consort of Poland Apr 27 Treaty of St Truiden: anti-French Trapdoors and Bourgondisch covenant Events in 1518 Famous Birthdays Apr 22 Antoine of Navarre [de Bourbon], King of Navarre, 1555-62), born in La Fère, Picardy, France (d. 1562) Born in 1518 Nov 1517 History by Year May 1518 What Happened in 1518 Assumption of the VirginMay 19, 1518