Fearn Abbey has its origins in one of Scotland's oldest pre-Reformation church buildings. The original Fearn Abbey was established in either 1221 or 1227 by Premonstratensian canons from Whithorn Priory. Originally founded at 'Old Fearn' near Edderton, it was moved by 1238 to 'New Fearn' further east, perhaps to take advantage of better agricultural lands. The Abbey was rebuilt between 1338 and 1372 on the orders of William III, Earl of Ross. Following the Reformation the Abbey remained in use as a parish church, but disaster struck in 1742 when the flagstone roof collapsed during a service killing many members of the congregation. A new church was then built adjacent to the old ruined church, but it itself had fallen into a ruinous state by the early 1770s. Accordingly, part of the original ruined Abbey was rebuilt in 1772 and again became the parish church as part of the Established Church of Scotland.
The current building thus substantially dates from 1772, but incorporating parts of the medieval structure. It was restored by Ian G. Lindsay & Partners in 1971. Further restoration was carried out in 2002-2003 under the auspices of Historic Scotland.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.