Well, after some serious digging, I still haven't found Janet's mother Mary and her sisters Robertson and Martha on the 1841 Census, but it appears that Robertson had two sons out of wedlock, James Dunningham 1863 in either Fetteresso or Stonehaven, Kincardineshire and Philip Milne 1866 in the Aberdeen City Poorhouse.
By 1871 Robertson and the two boys are living in the poorhouse in Peterhead. Robertson dies in 1873 of tuberculosis and in 1881 both boys are still living in the Peterhead poorhouse. Philip is a scholar and James is now James Milne, 18 and a Pauper. James disappears from the records after this. I haven't had a chance to check the immigration lists yet for him. Philip probably is the farm laborer who dies of pneumonia in Old Deer in 1891 with parents listed as question marks on his death certificate.
I haven't found a marriage or death certificate for Martha, but she could have died between 1851 and 1855. Little Janet, 2 years old on the 1851 Census likewise disappears. I couldn't find a birth certificate for her or for James Dunningham/Milne.
Also on a separate page of the 1851 Census, but at the same address as Mary and the girls is a Margaret Milne, 32 with her nephew Alexander Milne, 12 . Now I'm wondering if she also was a sister of Janet's and if there wasn't an older brother Alexander somewhere too. Mary and William married in 1808, but the first child I could find records for was Janet born in 1818. William was a seaman, but I doubt if he was gone from home completely for the first ten years!
Thanks to everyone who gave me some help on this one. Still have some digging to do!
Merry Christmas!
Carol
