Second Vatican Council
The Second Ecumenical Council of the Vatican, commonly known as the or , addressed relations between the Catholic Church and the modern world. The council, through the Holy See, was formally opened under the pontificate of Pope John XXIII on 11 October 1962 and was closed under Pope Paul VI on the Solemnity of the Immaculate Conception on 8 December 1965.
Pope Sixtus II
Pope Sixtus II (died 6 August 258) was the Pope or Bishop of Rome from 31 August 257 until his death on 6 August 258. He was martyred along with seven deacons, including Lawrence of Rome during the persecution of the Catholic Church by Emperor Valerian.