Hi Malc and K,
Yes Mary was born 1762 in Strichen and had a sister Elizabeth. Elizabeth was married to George Walker, who is on the gravestone of William and Elizabeth in Longside cemetry. I wondered who he was but then mamaged to find out.
My line is from Joseph Pickard. I have pictures at home (am at work just now) that i got sent from a man in Canada of some Pickards.
I too have not been able to find any marraige or death certificates of William and Mary, its very frustrating.
Malc, i stay in Peterhead, so i could go to the local library and look at the census and try and find out where Robert is buried. In the 1901 census, mile-end is mentioned, and i stay in that area, so will look into that. Errol Street and Marischal St are main streets in Peterhead and there is still quite a few old houses there.
I will get back to you, when i find out more
Anne