Mat(t)hew Forbes was born c1793 Duns, Berwickshire - probably the son of William Forbes & Elizabeth Walkenshaw, although his death certificate names his father as Matthew, mother n/k.
I believe he married 3 times, all in Glasgow: in 1819 to Janet Steel, 1839 to Mary Nish, and 1848 to Sarah McNeil. The marriage records all state he was a tailor in Glasgow, but don’t say if any party was single or widowed. I don’t know when any of the wives died, and I can’t find any children being baptised. The salient census entries are:
1841 - Davidsons Land 89 Gallowgate St, Glasgow
Neil Macphee 50 Journeyman Tailor
John Graham 55 Journeyman Tailor
Mathew Forbes 50 Journeyman Tailor
--- Forbes (female) aged 30
1851 - 119 Great Easter Road, Camlachie, Lanarkshire
Matthew Forbes 55 Tailor b Dunse, Berwickshire
Sarah Mcneil 56 wife b Kinter, Argyllshire
Fanny/Fannel [probably Jannet] Forbes 17 daur b Greenock, Renfrewshire
William Hamilton 8 Nephew b Glasgow
Mary Mcneil 66 Aunt b Ireland
1861 - 17 Coalhill St, Glasgow Barony
Sarah Forbes 67 b Ireland
Janet Forbes 26 daur b Greenock, Renfrewshire
Robert McKenzie 4 Grandson b Glasgow
William Graham 1 Grandson b Lanarkshire
Margaret Johnson 66 Lodger
Matthew died 30 April 1860 at 17 Coalhill Street, aged 67, and was buried on 2 May at the Eastern Necropolis. He is recorded as the step-father of Mrs Wm Boyd, Foundry Open. Burial records here:
https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSH8-P971-Y?cat=1323530and
https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSJ9-K6YP?cat=1323530Mrs Wm Boyd was formerly Margaret McKenzie, born Ireland c1821, who married William Boyd in Glasgow in 1836. One of their children was Malcolm Mcneil Boyd b1857, but I can’t for the life of me work out how Matthew Forbes was Margaret's step-father.
I also have no clue whether Fanny/Fannel/Janet Forbes is Matthew's daughter or step-daughter, or what happened to her after 1861.
I thought perhaps the Sarah McKenzie mentioned in the burial/lair book as having died in 1866 might be Sarah McNeil/Forbes, but she is identified only as the mother of Neil McKenzie:
https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSRF-K88X?i=272&cat=1323530Any help in connecting any of these relationships would be greatly appreciated – I’ve been going round in circles for days & failing miserably!