St Mark's Church is an ancient church on the north-east side of College Green, Bristol, England, built c. 1230. Better known to mediaeval and Tudor historians as the Gaunt's Chapel, it has also been known within Bristol since 1722 as the Lord Mayor's Chapel. It is one of only two churches in England privately owned and used for worship by a city corporation. The other is St Lawrence Jewry, London. It stands opposite St Augustine's Abbey (after 1542 Bristol Cathedral), founded by a member of the Berkeley family of nearby Berkeley Castle, from which it was originally separated by the Abbey's burial ground, now called College Green. It was built as the chapel to the adjacent Gaunt's Hospital, now demolished, founded in 1220. Except for the west front, the church has been enclosed by later a