Once again, Sandra, you have found so much valuable proof to verify what is being found on the various censuses, and added so much with your information on the Fish/Telford/Johnston/Logan families.
A couple of things have been rattling around in my head. Why would George Johnston, married to Jane Orr name his first daughter Elizabeth Fish Johnston, with the emphasis on her middle name of Fish? And who is 33 year-old William Johnston living with George in New York in 1850. William is transcribed as a farmer and would be born about 1817.
https://familysearch.org/ark:/61903/1:1:MCY6-X8WCould he be a brother, and in fact, could he be the William Johnston who was married to Eliza Fish on the 1841 census in Chirnside, Scotland? We don’t know when they married. Sandra did question before if William was George’s brother.
In 1841, in Chirnside, William is living with his in-laws, his wife Eliza Fish, and their daughter Janet who must be the Janet Fish Johnston, who died in 1917 in Yonkers. On that census, William is a carter and he was born about 1817.
I decided to follow William Johnston, in Scotland after 1841 to find his death and the names of his parents, but guess what? I never find William again. Eliza carries on largely with her sister Margaret Fish until Eliza dies April 3, 1894 in Chirnside.
William’s daughter was the Eliza Johnston who married George Logan and this theory about William being George’s brother would explain why Eliza and George Logan seem to be living with the George Johnston and Jane Orr Family in 1875. She would be George Johnston’s niece if William Johnston is his brother.
So why did William never return to Scotland if this is him? Did he die shortly after 1850 or did he decide to make a new life in the USA?
Another child of William Johnston and Eliza Fish is George Johnston who married Jane Telford. I haven’t finished following that couple through as yet.