Apr 5 Henrik Constantijn Cras, Dutch lawyer (Laudatio Hugonis Grotii), dies at 81 Apr 8 Thomas Douglas, 5th Earl of Selkirk, Scottish philanthropist, dies at 48 Apr 20 Arthur Young, English writer on agriculture (Annals of Agriculture), dies at 78 Mar 1820 Famous Deaths by Year May 1820 Famous People by Cause of Death Assassination Drug Overdose Gunshot Wound Murder Plane Crash Suicide