Date please - Scotland possibly Glasgow area, possibly KELLY

[carolapple]

Hi
Any help you can give me with dating the attached photo would be wonderful.  We have no idea whom the lady is.  This is the only photo of this type that we've inherited.  The lady resembles other photos in old leather albums of cartes-de-visite that we've inherited (mainly Glasgow photographers we think), all unknown to us (at this stage).
They were all passed down the MCKIE line, but the only resemblance is my great-great grandmother Martha KELLY from Helensburgh, born 1836, so perhaps her family.
Many thanks for any help
Carol

[jim1]

This looks 1860 +/- 5 years.
It may be an ambrotype (on glass) or a copy.
As for age I would suggest 75-80.

[Treetotal]

I agree with Jim, so a generation further back.
Carol

[jim1]

I agree with Jim, so a generation further back.

I would say 2 Carol, I don't think this lady is the the mother of
someone born in 1836 but I could be wrong.

[Treetotal]

Oh yes Jim, School Girl error...Note to self "I must pay Attention to text"....
Carol

[carolapple]

Huge thanks Jim and Carol, that's great.
Quick maths then says this lady likely born 1775-1790
Very kind regards
Carol