Harold Jeffreys
Sir Harold Jeffreys, FRS was a British geophysicist who made significant contributions to mathematics and statistics. His book, Theory of Probability, which was first published in 1939, played an important role in the revival of the objective Bayesian view of probability.
22 April 1891
Born on the same birth date (22 April 1891): Laura Gilpin • Sacco and Vanzetti • Vittorio Jano
Born on the same birth day (22 April): Aivars Kalējs • Ana María Shua • Hanfried Lenz • James Stirling (architect) • Jeff Minter • Julius Sterling Morton • Pierre Hétu
Born in the same month (April 1891): Arnold Jackson (British Army officer) • B. R. Ambedkar • Dave Bancroft • Dorothy P. Lathrop • Edward Wilfred Taylor • Frank Barson • Françoise Rosay • Laura Gilpin • Laura Vicuña • Maurice Buckley • Nella Larsen • Otto Lasanen • Robert Scholl • Sacco and Vanzetti • Sergei Prokofiev • Tristão de Bragança Cunha • Vittorio Jano