His Holiness Pope Stephen X (in Latin Stephanus Decimus) is the Pope number 154 of the Catholic Church.
Federico de Lorena was born in Lorena, in the current country of France.
The Holy Father Stephen X initiated his pontificate in the year 1057. He succeeded Pope Victor II. His papacy lasted for 1 years, ending during the year 1058. He was succeeded by Nicholas II, who would become the following bishop of Rome.