Alberto Bolognetti

Alberto Bolognetti (1538–1585) was an Italian law professor, bishop, diplomat, and cardinal. He was appointed by Pope Gregory XIII as a papal nuncio to Florence, Venice, and the Polish–Lithuanian Commonwealth. In that last appointment, he persuaded King Stephen Báthory to adopt the Gregorian calendar. He was promoted to cardinal priest, but died before he could return to Rome for the ceremonies. Provided by Wikipedia