Joseph Diez Gergonne

Joseph Diez Gergonne was a French mathematician and logician.

19 June 1771

Born on the same birth day (19 June): Andrew Dilnot • Chris Armstrong (footballer, born 1971) • Jacob deGrom • Jahine Arnold • Mary Schapiro • Michalis Romanidis • Mustaque Ahmed Ruhi • Sabine Braun • Yuko Nakazawa

Born in the same month (June 1771): Ernest Augustus, King of Hanover • Hermann von Boyen • Patrick Gass • Thomas Douglas, 5th Earl of Selkirk • Éleuthère Irénée du Pont