M. Lowry:
I did not locate a marriage record but it occurred pre-1864 so no civil record would be available.
There were two different couples-Patrick Lowry and Bridget Ryan. One was from Tully near Ballaghaderreen and the other is described below.
Patrck and Bridget had a number of children-- Peter 1864 Thomas 1866 Augustine 1868 Brigid 1870 Peter 1873 Margaret 1875 Family lived in Lisnaneane townland in Kilcooley civil parish. Below are civil birth records for the three youngest children.
Bridget 1870 third record https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1870/03345/2226536.pdf
Peter 1873 fifth recordhttps://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1873/03171/2163364.pdf
Margaret 1875 fifth record https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1875/03089/2132639.pdf
Patrick Lowry died in 1908. See fourth record https://civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1908/05494/4538961.pdf I think there was an error and the clerk/registrar showed 1907 but every other record on the page was for 1908 so I think Patrick died in 1908.
The 1901 census shows there were two other children Catherine and James and I did not find birth records for them. James pops up again in 1911.
1901 census http://www.census.nationalarchives.ie/pages/1901/Roscommon/Tulsk/Lisnaneane/1673404/
1911 census http://www.census.nationalarchives.ie/pages/1911/Roscommon/Tulsk/Lisaneane/796590/
Roger McDonnell