In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Mount like this:
MOUNT, or MOEL-Y-MWNT, a parish in the district and county of Cardigan; on the coast, 4 miles N by E of Cardigan r. station. Post town, Cardigan. Acres, 1,142. Real property, £663. Pop., 146. Houses, 23. The property is much subdivided. The living is a p. curacy in the diocese of St. David's. Value, £55. Patron, J. Davies, Esq. The church is good.
GB Historical GIS / University of Portsmouth, History of Mount, in Ceredigion and Cardiganshire | Map and description, A Vision of Britain through Time.
Date accessed: 26th April 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Mount ".