Mark was involved in going on missionary work with Paul, the 'Apostle to the Gentiles.'
Mark also authored the Gospel which bears his name.
St mark
If you are referring to St. Mark's in Venice, Italy, the Church is dedicated to him and his relics are held there.
St Mark's Square is in Venice.
The Eve of St. Mark was created in 1944.
St. Mark Enthroned was created in 1511.
St. Mark's Cemetery was created in 1773.
St. Mark's Hospital was created in 1835.
St Mark's Campanile was created in 1514.
St. Mark, as far as is known, was not married and had no children.
The Belle of St. Mark was created in 1984-03.
St. Mark the Evangelist is one of the four authors of the New Testament Gospels. The city of Venice in Italy claims him as their patron saint, and his relics are said to be housed in St. Mark's Basilica in Venice. St. Mark is traditionally believed to have been a companion of St. Peter and traveled with him to preach the Gospel.
No, Mark was not a pope.