Historical Events Apr 11 English premier John Dudley appointed Duke of Northumberland Apr 20 John Dudley becomes Earl Marshal of England Events in 1551 Famous Deaths Apr 6 Joachim Vadian [Vadianus] Swiss humanist, scholar and protestant reformer, dies at 66 Apr 21 Oda Nobuhide, Japanese warlord (b. 1510) Mar 1551 History by Year May 1551 Famous People by Cause of Death Assassination Drug Overdose Gunshot Wound Murder Plane Crash Suicide