« Reply #1 on: Wednesday 27 May 15 11:45 BST (UK) »
dathai
There is a baptism in Galway St. Nicholas Combined N&E RC Church for
Mercer McDERMOTT July 5 1839; F Terence; M Maria (no surname)
Sponsors Christ. REID & Mary RIELEY
There are other baptisms in this church with the same parents
James Mar 23 1834; F Terence; M Maria (no surname)
Sponsors Marcus BROWNE & Anne KELLY
Penelope Dec 14 1835; F Terence; M Maria (no surname)
Sponsors John BERAND & Catherine STEWARD
Thomas Sep 5 1837; F Terence; M Maria (no surname)
Sponsors James EARLY & Marcella QUIGLEY
Peter May 23 1843; F Terence; M Maria (no surname)
Sponsors John CLYNCH & Catherine LALLY
Margaret Mar 04 1845; F Terence; M Maria (no surname)
Sponsors Thomas LALLY & Maria MOONEY
Marcella Jan 28 1849; F Terence; M Maria EARLEY
Sponsors William GALAHER & Mary McDermott
there is also a child born in 1832 named Mary; F Terence; M Honoria (no surname)
Sponsors John REED & Anne McDermott
She may be a half sister??
There is no marriage that I can see for Terence and either Honoria and/or Maria circa early 1830s
There are several Terence McDermotts listed throughout the west but only one result in Ireland for a child named Mercer online that I can see
Kearney & Bourke/ Johns & Fox/ Mannion & Finan/ Donohoe & Curley
Byrne [Carthy], Keeffe/ Germaine, Butler/ McDermott, Giblin/ Lally, Dolan
Toole, Doran; Dowling, Grogan/ Reilly, Burke; Warren, Kidd [Lawless]/ Smith, Scally; Mangan, Rodgers/ Fahy, Calday; Staunton, Miller
Further generations:
Brophy Coleman Eathorn(e) Fahy Fitzpatrick Geraghty Haverty Keane Keogh Nowlan Rowe Walder