Cork is divided into Cork South West & Cork North East for genealogical research.www.irishgenealogy.ie
Prior to this the only census substitute you might find helpful is the Griffith Valuation, but its 1852.www.askaboutireland.ie
Drinagh or Part of Drinagh are Parish's, in the Poor Law Union of Skibbereen. The East & West townland of Drinagh
are in the PLU of Dunmanway.
If you feel descendants could be in Ireland, look in the Cork telephone book for them and the area and write a few letters.