Cornelius Gemma

Cornelius Gemma was a Flemish physician, astronomer and astrologer, and the oldest son of cartographer and instrument-maker Gemma Frisius. He was a professor of medicine at the Catholic University of Leuven, and shared in his father's efforts to restore ancient Ptolemaic practice to astrology, drawing on the Tetrabiblos.

28 February 1535

Born on the same birth day (28 February): Alfred Marshall (businessman) • Christian Poulsen • Frank Bonner • Geoffrey Arend • Mario Andretti • Natalia Vodianova • Rory Cochrane • Stephanie Beacham

Born in the same month (February 1535): Min Phalaung • Pope Gregory XIV