On the 1901 Scottish census for Inversk Musselburgh
Isabella Costgrove, 44 b. Tyrone Ireland with children
Mary 15, Hellen 10, Thomas 5, and Willm J. 2.
1911 census in the same location
Isabella Cosgrove 54, widow, b. Ireland
Mary Cosgrove 24, b. Bothwell Lanark, net factory worker
Ellen Cosgrove 20, b. Paisley, Renfrew, net factory worker
Thomas Cosgrove 15, b. Glasgow, Lanark pitheadman in coal mine
Wm J. Cosgrove 12, b. Dumbarton & Helensburg (Glasgow)
Death for Isabella Cosgrove, widow of Thomas Cosgrove, bootmaker, on Jan 16, 1926 Musselbourgh
She was the daughter of James Gilmor, carpenter deceased and Isabella Gilmor deceased, maiden name not known. Informant was son Thomas Cosgrove 113 Lochard Rd. Musselbourgh.
Can't find a close enough death match on Scotlands People to order for Thomas to check for his parentage.
The theory I'm following is that Thomas Cosgrove who married Isabella Gilmour might have been a son of Thomas McCusker and Dorothea Gilmour and therefore a younger brother to my Ggrandfather William. Perhaps Isabella Gilmour's father James was an older brother to Dorothy Gilmour.
It doesn't further this thread any but William James Cosgrove, s/o Thomas and Isabella, seemed to emigrate to Canada. Form 30A for Wm Jas Cosgrove with mother Isabella Cosgrove of Musselburgh, Scotland arrived at Quebec on the Athenia which sailed 18 July 1923 from Southampton. His destination was Winnipeg and his form was signed Jas Cosgrove. Border crossing for James Cosgrove, 24, single, b. Helenburgh Scotland, arrived Athenia July 1923. He was an accountant, crossing at Niagara Falls in 1923, going to reside permanently in the US - destination Buffalo, N.Y.
July 1936 arrival at Southampton from New York on the Bremen for Wm J. Cosgrove 37, and Annie Cosgrove, 34. Destination 180 New Street Musselburgh Scot. He is a railway employee from the U.S.
Return sailing arriving New York from Southampton Sept 1936 for James Cosgrave 37 and Annie 34. James naturalized July 1930 and address given was 609 Audubon Ave. Mt. Lebaron Pittsburgh, PA.
Debbie