Pope Mark was a native Roman who was only in office for about 9 months. Before becoming Pope,Mark was mentioned in letters written by Emperor Constantine and Pope Sylvester,meaning that he was probably a prominent member of the clergy and was fairly well known when he was elected. Mark donated his house to the Church and it became the Basilica of San Marco,named for St.Mark the Evangelist(Bible Mark,not Pope Mark). The Church is the National Church and former embassy of Venice in Rome and during World War II it was used as the offices for Mussolini(there went the neighborhood). Pope Mark died of natural causes and after moving around a few times,his remains finally came to rest in an urn in the church that he built. His feast day is the day of his death October 7th.