The townland was referred to as ‘Garryduffe’ or ‘Garrydough’ in some records and of being ‘being part of the quarter of Carrownecarrogh’ in confirming the various leases of lands within the townland. Among the leases were those by Lettice Usher and Dorothea Ormsby (both nee Waddington) to Francis Giles in 1722; by J Donelan to R. Rathbourne in 1819; and later by Charles Donelan to Samuel O’Brien in 1840; and by A.O.B. O’Conor or Charles Donelan in 1875 83. The death of James Donnellan of Garryduff is noted in the Clonfert Diocese Wills in 1709, and John Donelan of Blackgarden is listed in 1821 (confirming also that the family belonged to the established church).
In the tithe in 1825, only 'Widow Donelan' is listed. Part of the townland is included in ‘Lot 4’ in the Landed Estates Court (substantial) sale of the ‘Clostoken Estate’ in November 1862 and I have the detail on same if you would like it.
For my part, I'm currently completing a book on the parish and would be grateful for any information on their descendants in the U.S. and elsewhere, and their successes. My e-mail is email@example.com
Best regards, Steve.