I research the Irish Family History Foundation's database. It contains 12,800,000 surviving rcds for abt 70% of Irish counties. Rcds are increasingly sparse B4 1840, rare B4 1800. Cos. Donegal and Derry were recently added to the database.
Note 1 - Without a KNOWN county, the chance of an ancestor's rcds NOT being in this database is AT LEAST 30%.
Note 2 - Only 1/2 of Co. Cork's rcds are in this database.
Note 3 - The RC church kept control over most parish rcds from Tipperary (north). These are ONLY available thru the Tipperary Family History Research center at a substantial fee (regardless of outcome).
For Bridget McInerney M 1909 +/- 1 yr, Co. Limerick, I found 1 rcd in 1908, Limerick #3 CR.
For Harold Foster M ditto, I found ditto. These are highly likely to be for your ancestors. A view of the detailed rcds should confirm the M was to each other. If so, the view should also show their parents' names as well as other details.
For Bridget McInerney B 1887 +/- 4 yrs, Co. Limerick, with the father's forename unknown (or found above), I found 6 rcds: 1884 Croom RC, 1884 Limerick #2 CR, 1889 St. Michael's, 1889, 1891 Limerick #2 CR and 1891 Parteen & Meelick RC. Father's forenames were John, William, Pat(rick), Pat(rick), James, and James respectively.
Google the Foundation's name to lead you to this database. Register, opt to be notified as rcds are added and browse. Pls post your search results to my genforum msg.