A scheduled ancient monument located on a low mound in Levengrove Park, Dumbarton, St. Serf's Church most-likely dates from the 13th century. It was the Mediaeval parish church of Cardross where the viscera of the Robert the Bruce may be buried, evidenced by a plaque lying adjacent.
The ruins comprises a rectangular structure of roughly dressed masonry, aligned east-west, some 16m (52.5 feet) in length and 6.1m (20 feet) wide and surviving to a height of about 1m (3 feet). The nave is 11.8m (39 feet) long and contains a number of 19th-century burials marked by three rows of headstones. It is now terminated by a wall inserted at the same time to support memorial slabs.
The earliest reference to the church of Cardross occurs in an early 13th-century charter in which the Earl of Lennox granted the church's income to the Bishop of Glasgow. In the early 14th century this was the parish church for King Robert the Bruce's home at Cardross Castle and the Rector of Cardross played an important part in his funeral arrangements in 1329. As early as the 17th century, folklore suggested that his viscera were buried here.
