Kirkcaldygirl on Family Tree Circles

Emily ( Emilia ) Rigney married Tom Miles in Dublin 11.11.1879 in St James Church. Island Bridge Barracks. Tom was in 3rd. Dragoon Guards. Catholic rites. Father named as William Rigney ( Mason )on the marriage certificate. Also present was Charlotte Rigney whom I suppose might have been mother or a sister.
Emily and Tom had 5 children:
Tom Miles who died as a baby
May Josephine Miles 08.10.1877
George Philip Miles 01.03.1882 to 1962
Emily Ellen Mary Miles 09.03.1885
Mabel Alice Miles 24.07.1886 to 1967

Emily died in Rawalpindi or Muttra, then India, in about 1886 probably after childbirth.

I would be most grateful if anyone is able to help me find Emily's place and date of birth - most likely in Ireland or any other information to enable me to trace her family tree further back. Thanks.