Thank you for your message. I hope that someone with information gets in touch and helps you with your research.
In the meantime here are some websites that you may find useful:
The Tithe Applotment Books (1823-1838) found at http://titheapplotmentbooks.nationalarchives.ie/search/tab/home.jsp
and Griffith?s Valuation (1848-1864) found at http://www.askaboutireland.ie/griffith-valuation/
Donegal Resources: http://freepages.genealogy.rootsweb.ancestry.com/~donegal/raphoeproj.htm
Genealogy Links: http://www.genealogylinks.net/uk/ireland/donegal/index.html
The National Archives of Ireland http://www.nationalarchives.ie/genealogy1/genealogy-records/introduction/
The National Library of Ireland http://www.nli.ie/en/family-history-introduction.aspx
The National Archives UK ? genealogy search: http://www.nationalarchives.gov.uk/records/looking-for-person/
The Public Records Office of Northern Ireland http://www.proni.gov.uk/index/family_history.htm
Irish Times: http://www.irishtimes.com/ancestor/browse/#Donegal
Irish Genealogy Tool kit: http://www.irish-genealogy-toolkit.com/
I hope that some of these links prove useful.
All the best,