Wow, thank you for your efforts so far Prue! I did look at some of the links on the Photograph restoration page, and was looking in particular for a similar sleeve on the dress, as the one in the photo has a little 'kerchief detail at the top. The closest on there was about 1880's.
My dad is going to get a shock. He was always told this woman was Granny Granelli. He naturally thought it was his OWN granny, but she was too young, obviously. However, even his great grandmother was born in the 1850's and this woman seems older than 40-ish. However I am aware that life in those days wasn't good for the complexion!
There is a good chance that this photo was taken in Italy. We were so hoping for a photographer's mark because it may have given us the family's Italian town. Oh well!
I looked at the photo out of the frame again, and the paper IS stuck onto thickish card, and I would say the photographic paper is even thinner than standard paper of today!
I love this stuff too Prue!
I have a sister-in-law who is a conservator, but I like this way of finding out. More fun, and besides I don't get to see the SIL much these days.
Thanks again, and let me know what else you can come up with!
Nina