St Moluag's church (Teampall Mholuaidh in Scottish Gaelic) was built in the 13th century. The church has a basic T shaped structure, with two small chapels on either side of the main body of the church. The southern chapel can only be accessed from outside. There is a lot of speculation about the ancient origins of this place of worship; one tradition tells that St. Ronan founded the church, before retiring to the Isle of Rona (in legend travelling on the back of a whale).
The church is now in use as a Scottish Episcopal Church. There are ruins of another temple 'Teampall Ronaidh' about 500m north east of Teampall Mholuaidh and remains of another temple 'Teampall Pheadair' are about 2km south west of Teampall Mholuaidh beside the old graveyard near the village of Swainbost.
The church is dedicated to the shadowy figure of St Moluag. It has been suggested that the church was built by the son of a Scandinavian king, who had converted to Christianity.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.