Birth of Emily May Shaw in 1882 for reference - place of birth is Edwards Street, Limerick, father address New Barracks. Parents Frederick Shaw corporal 76th Regiment, mother Emma Longbourn.
Baptism of Emily (RootsIreland) took place at St. Michael's Garrison, Church of Ireland. As far as I can the 76th Regiment of Root was disbanded in 1881 and merged in the 33rd (Duke of Wellington's) Regiment.
No sign that I can see so far of other children or a marriage of Frederick & Emma in Ireland...
The Church of Ireland parishes for Athlone town are St. Mary's based in Co. Westmeath, and St. Peter's in Co. Roscommon. Records for St. Mary's go back to 1768, while records for St. Peter's only seem to be available back to to the 1870s, both are available in the Representative Church Body Library, in addition RootsIreland has some transcripts for these parishes.