Pope Clement X’s papacy was notable for his calm leadership and his emphasis on peace within the Catholic Church, especially after the turbulent period of papal politics in the mid-17th century. Birth name: Emilio Bonaventura Altieri Nationality: Papal States Born: July 13, 1590 Died: July 22, 1676 Pontificate: April 29, 1670 – July 22, 1676