Luigi Bettazzi  Luigi Bettazzi (born 26 November 1923) is an Italian Prelate of the Roman Catholic Church. Bettazzi was born in Treviso and was ordained a priest on 4 August 1946. Bettazzi was appointed Auxiliary bishop of the Archdiocese of Bologna, as well as titular bishop of Thagaste, on 10 August 1963 and ordained on 4 October 1963. Bettazzi was appointed bishop of the Diocese of Ivrea on 26 November 1966 where he would remain until his retirement on 20 February 1999. Bettazzi is "the only surviving bishop of the original 40 who signed the" Pact of the catacombs in 1965.