Hi Isobel,
Thanks so much for the lookup - it's great to have Mary Ann's birthplace confirmed. Her age gives a birthdate ca 1830 which fits with the age on her death certificate. She was Mary Ann Cook, daughter of John Cook and Margaret McWatt. I've checked the IGI but didn't find her birth there, or a marriage for her parents. I did find two sons born to these parents in Renfrewshire, Robert in 1829 and John in 1842 - a huge gap there!
Best wishes
Jan
PS Litte Jane, aged 2, was my great grandmother :-)