There is another baptism at St Mary's:
John James LEIGH son of Richard and Catherine (nee Rourke) born 30 Nov 1873
bapt. 7 Dec 1873, godparents Joseph Canepa
& Mary Ann Rourke.

When I looked at the 1881 census, living in same house as Richard & Cath were her parents:
9 Fort Street, Douglas
O'ROURKE
Patrick, head, mar. 78, b. Ir. Farm labourer
Bridget, wife, mar. 70, Ireland, employed at preserved potato works.
Mary, dau. U. 40, Ireland , potato works
Margaret, dau, U. 36, Ir. potato works
Crilley Ellen, dau, W. 24,born Douglas, potato works
O'Rourke Patrick, son U. 30, Douglas, boatman
Kelly, Thomas W. g.son, 10 , Douglas scholar
Kelly, Mary J. g.dau, 5, born Douglas, scholar

The Rourke's are also on 1851 census
13 Society Lane, Douglas
Patrick, 40, mason's labourer, Ireland
Bridget,40, Dealer, Ir.
Mary,dau. 15, servant, Ir.
Catherine, dau, 13, scholar, Ir,
Bridget, dau, 10, scholar, Ir.
Margaret, dau, 7, scholar, |Ir.
Patrick, son, 3, born Douglas

Patrick was bapt. at St Mary's, 6 April 1847,
son of Bridget & Patrick Rourke, godparents
Charles Lynch & Mary McKeown