Judith, I'm not sure what measures you have taken to locate more records but I found searching microfilm indexes for Donegal Births my best bet. Looking up my family name, Hyland (and varients), and focusing only on those from Donegal Registration Districts helped me isolate probable children. Out of 15 lookups, I found the 12 known children and one not previously known. We have a William Hyland from Tipperary, S.R. stationed in Cork and Derry, married in Derry, and then stationed for the remainder of his 30 years in Donegal. His children were born in Coleraine, Coleraine (Mother went back home for birth), Ramelton, Ramelton, Letterkenny, Breenaugh, Letterkennny, Glenties, Glenties, Letterkenny, and Belfast (retired). My family was southern Donegal, Catholic Parish of Conwal and Leck. Some records are available on microfilms: Banns, 1853-1918; baptisms, 1853-1898; marriages, 1854-1921. FHL BRITISH Film 1279236 Items 22 - 26 Baptisms, 1898-1924; baptisms, 1874-1950; marriages, 1877-1920. FHL BRITISH Film 1279237 Items 1 - 3 Baptisms and marriages, 1854-1880. FHL BRITISH Film 926208 Baptisms, 1851-1924; marriages, 1857-1962; banns, 1853-1918. FHL BRITISH Film 1279203 Items 1 - 6 R.I.C. members were not allowed to marry until they had been in the Constabulary for seven years and they could not be stationed in either their county of birth or their wife's county. If it is certain that your great grandparent's marriage was in Donegal, then your great grandfather would have been moved to another county within a few months. The fact that a child was born in Donegal could mean he retired and they returned to her county of birth or that she returned there to have the child. Your certificate should show the address of the father. Your great greadfather's R.I.C. records should show the counties he was assigned to and the dates of assignment. If you have not done so, you might look up his name in the R.I.C. index, FHL microfilm # 852096, locate your greatgrandfather's name and then get the microfilm containing his service record (potentially 856061 or 851062 presuming 7 years of service at the time of his marriage). From his record you may find he was stationed in another county after his marriage and some of his children were born outside of Donegal. In any event, there were other places in Donegal where R.I.C. personnel were stationed. Hope this helps Ernie Nashua, New Hampshire, USA