Thank you very much everyone for all your help and suggestions

. I managed to find Margaret Allan's d. cert (by accident - I'd tried everything to find it and then found it when I was looking for her mother's - it was under Margaret Stuart not Stewart which was on the m. cert), so far I've seen her mother's surname transcribed as Cowe (which I think it is), Howe, Cowie and Carne.
I have heard of familysearch, just not seen it abbreviated to f/s before.
Any suggestions on where I'd find the kirk records, please?
To fill in a bit of this Margaret (dau. of Peter and Margaret Cowe (MA snr))'s story (I'll call her MA jnr), she was a domestic servant had a son when she was 23, John Howitt Allan (JHA), no father's name on birth entry. (tho Knox or Allan is suggested in a transcript of another record I haven't seen). When he was 6 she married Alexander Stewart (or Stuart depending on which record you're looking at). Found her d. but haven't found any censuses with them both (he was present at her d. in 1884 in Aberchirder).
From censuses etc. it appears JHA was brought up by his grandparents, and became a house painter (his grandfather was a painter too). He had two marriages, 1st wife died at 27, after having at least 4 children (m. when 22). My grandmother was his daughter from his 2nd marriage (along with 2 sons who died in infancy). JHA emigrated to Canada (without his family) and died there.
There's a wee tragic story I realised when I found MA snr's (nee Cowe) d. entry. Was surprised to realise I already had a copy of it. She died of bronchitis of 2 months, 81 years, living with JHA. I realised that the reason I already had a copy was because further up the page was the death of one of JHA's sons, 11 weeks old, 2 days earlier, from bronchitis of a few days. Awful for the family.
Thanks again everyone, glad to have been able to fill in more of Margaret Allan and her mother with your help, and to translate that entry.