"[2] St Michael's Church is set in a churchyard in the countryside of Anglesey, north Wales, about 1.4 kilometres (0.87 mi) from the village of Gaerwen.

[4] Some restoration work has taken place in the 21st century, assisted by funding from the Welsh Government and Cadw (the statutory body responsible for the built heritage of Wales), and services have occasionally been held.

[11] A survey in 1937 by the Royal Commission on Ancient and Historical Monuments in Wales and Monmouthshire dated one of the gravestones by the altar to the 11th or 12th century.

[2] The Royal Commission's survey also noted a fragment of a gravestone from between the 9th and 11th centuries that had been built into the bellcote, and two 18th-century memorials within the church.

Cadw, which is responsible for the inclusion of Welsh buildings on the statutory lists, also notes that because many old churches on Anglesey were rebuilt in the 19th century but this one was not, "these remains constitute an important survival, retaining unrestored original late medieval features.

"[2] Writing in 1833, before the church was closed, the antiquarian Angharad Llwyd described St Michael's as "a spacious and ancient structure.

[13] Visiting twelve years later, Harry Longueville Jones said that St Michael's was "greatly dilapidated" but had been "one of the most interesting in the island".

[11] He described the north doorway of the nave as having "singularly elegant though mutilated details" and the bellcote as being "of good design".

"[11] Sir Stephen Glynne noted on his visit in 1865 that the church was now abandoned and presenting "a wretched scene of decay" internally.

[4] He commented upon the "good mouldings and spandrels" of the doorway at the west end of the chancel, and also referred to the "debased character" of the north chapel.