So the infromation from Agnes' Marriage cetificate is as follows:
Agnes Craig Married Alexander Marshall on the 23 of March at London Road in Glasgow, they were married after banns according to the forms of the church of Scotland. Agnes was a bleacher and Alexander was a Shoemaker. Alexander was 21 and Agnes 20. Tthey were noted as both living at 23 Kirk Street. Alexanders parents were John Marshall, a cotton weaver who was deceased at the time of the marriage and Margaret Marshall M.S. Hamilton. Agnes' Parents were James Craig and Janet M.S. Crawford. Donald McNair and Robert Wallae were witnesses.
ive also found a record of Agnes and Alexanders illegitemate child Agnes Marshall born 1863 in Springburn. Her parents are listed as being a Shoemaker and a Bleachfield worker.
Also found a record of a son, John who was born 1867 at 64 Drygate in the High Church area of Glasgow
I've found a census record for 1871 in the Calton area which seems to add up mostly though I'm a bit confused by one bit so I'm not too sure.
on this census theres an:
Alexander Marshall, 26 Shoemaker
His wife, 25 ( can't read the name, possibly Jane but that wouldnt fit, doesnt look similar to Agnes when compared to the daughter agnes' name)
Agnes Marshall, 7 daughter
John Marshall, 3 Son
Ann? Mashall, 1 Daughter
John Marshall, 22 Brother also a Shoemaker
The shoemaker adds up, the daughter and son names and ages match records but the name of the wife seems wrong.
EDIT: I've jusr ound a record for a Ann Marshall born to Agnes and Alexander in 1870 so qould be 1 by 1871. this seems to be the 1 year old on this record but the name just doesnt look like Agnes for the wife at all