Okay, now I've reread the thread.
This must be Grace's family on the 1841 census:
http://interactive.ancestry.co.uk/89...cklabel=Return
East Side New Road Norfolk St, Mile End Old Town
M?????? Gillies 40 S[cotland]
David Do 18 Paper Stainer Y
Matthew Do 17 Do Y
Robert Do 14 Copper Founder Y
Grace Gillies 12 Y
Mary Do 10 Y
John Do 8 Y
-
Joseph McMinn 8 Y
Frances Do 4 Y.
Grace's baptism record shows her parents as Robert and Merion:
http://interactive.ancestry.co.uk/15...cklabel=Return
The mother's name is Merion on some and Marrion or Marion on some of the other children's baptisms, with Sinclair and Williamson used as middle names for two of the children (so possibly family surnames).
This is the marriage which I assume you found:
http://interactive.ancestry.co.uk/29...nSearchResults
Robert Gillies bachelor of this parish and town of Manchester tea dealer and Meron Borland of this parish and town of Manchester spinster were married in this church by licence 6 Oct 1822
Witnesses William McMinn, John Glover, Robert Smith clerk.
Although this Robert Gillies is a tea dealer, whereas he was a carpenter or similar on the children's baptisms and a draper on Grace's marriage cert, it looks to be the right couple because of the McMinn witness and the McMinns on the census.
Findmypast has the marriage licence details:
http://search.findmypast.co.uk/recor...hlights=%22%22
William McMinn also named on there and he is also a tea dealer. He makes oath that Robert Gillies and Meron Borland were both born and baptised in Scotland, as was he.
On the 1871 census Marion Gillies is 73, born Scotland Dumfries:
http://interactive.ancestry.co.uk/76...17017016/facts
(I realise you will already have all this, but just for reference)
There is a public tree on ancestry which has Merion's parents as Dalrymple Borland and Grisel Mounsey, but we will need to check into that to see whether it's correct or not. Hopefully we can connect William McMinn to Merion's family. Think that will have to wait until tomorrow though as it's late here!