William Harvey
William Harvey was an English physician who made influential contributions in anatomy and physiology. He was the first known physician to describe completely, and in detail, the systemic circulation and properties of blood being pumped to the brain and the rest of the body by the heart, though earlier writers, such as Realdo Colombo, Michael Servetus, and Jacques Dubois, had provided precursors of the theory.
1 April 1578
Born on the same birth day (1 April): Alberta Hunter • Anne McCaffrey • Barry Sonnenfeld • Bjørn Einar Romøren • Brad Meltzer • Ernest Barnes • Jean-Henri d'Anglebert • Jean-Pascal Delamuraz • John Butler (musician) • Magdalena Maleeva • Paul Manafort • Richard Adolf Zsigmondy • Toshiro Mifune • Ólafur Ingi Skúlason
Born in the same month (April 1578): Philip III of Spain