Hi, The church is actually the Chalmer's Church. The building has been used as a disco and nightclub for a number of years. St. Mungo's Church of Scotland is about 1/2 a mile away. St. Mungo's R.C. Church is a couple of hundred yards away on the right.
Thanks for the clarification. I must admit I didn't realise there were two St Mungo's and was getting confused because I didn't think my ancestor married in a Catholic Church.