Hi Matt,
Regarding the name "DAVIN" , Griffith's Valuations have 19 entries for the Barony of Ballynahinch which covers the civil parishes of Omey (Clifden), Ballindoon, Moyrus and Ballynakill. This valuation was taken c1853. www.askaboutireland.ie Free Site
Miriam Moffit's book - The Protestant Missions in Connemara - 1848 - 1937 (2008) has a record of the marriage in 1851 of Thomas Davin of Clifden to Mary Murray. Thomas' father was John a Weaver. In 1859 a John Needham of Ardbear married Margot Davin of Tullarachan. Margot's father was named Dominick. In the same year a John Davin of Ballyconree married Barbara Folan from Ballyconree. They are described as farmers. In 1863 a Bridget Davin of Ballyconree is recorded in a school entry. Her father is Martin and mother Mary. In 1867 a Julia Davin is also recorded with the address Russ. Father is John Davin and mother Barbara.
This Barony, as well as Moycullen Barony was the subject of hundreds of evictions. The Protestant Mission activity created divisions between families and neighbours. The Catholic church authorites were slow to build schools for primary education in rural areas and the Protestant Mission, whose base was in London took advantage of the situation in ordert to increase their numbers in Ireland.
The famine of the 1840's had left many in dire poverty.
Regards