I search the IFHF's online database @ ROOTSIRELAND.IE. It has abt 19 million B/M/D and other records for MOST Irish counties. Records before 1863 are increasingly scarce and almost non-existant prior to 1800. Early B/M/D events either weren't recorded, or the records haven't survived.
For James Toner B 1900 +/- 1 yr, Co. Donegal, with a father forenamed Pat(rick) and mother Frances McLaughlin, I found 2 records.
For a Pat(rick) Toner and Frances McLaughlin marriage in 1890 +/- 10 yrs, somewhere in Ireland, I found ZERO rcds. B/M/D registration was civil and mandatory after 1863. If they married in Ireland, this record SHOULD exist. Contact the General Register Office at WWW.GROIRELAND.IE to explore this further.