I was taking an additional look at this branch and noticed that the family had Mary Riley, age 24, born Ireland, working as a factory operative with them in the 1860 census. I was thinking maybe she was a relative of Patrick or Bridget. Unfortunately, I don't see her after the census. Anyone see any likely matches?
When I first read your thread, I also noticed Mary Riley. I've not found anything, yet, but since we can't find any other information about the Donohues, it could be worth the time to research Riley/Reilly in Newburgh.
1900 census states that
Bridget Donohue immigrated in 1853 (mother of 6 children, 4 still alive).
1910 census states that
Bridget Donahue immigrated in 1854 (mother of 5 children, 5 still alive).
Perhaps it is just coincidence, but in the 1900 Newburgh census:
John Riley, born October 1842, married 31 years. Born Ireland,
immigrated 1854. Farmer
Elizabeth Riley, wife, born October 1849, married 31 years, mother of four children, four still living. Born New York, parents born Ireland
Arthur M Riley, son, born April 1886. Born New York
Perhaps the same family?
1880 Newburgh
John Reiley, age 39, Blacksmith. Born Ireland
Elizabeth, age 30, wife, Keeping house. Born New York, parents born Ireland
Henry J, age 10, son
William, age 8, son
Ida M T(?), age 6, daughter
Ezra Huestis(?), Servant, Blacksmith, born New York, father born New York, mother born Connecticut
Children were born in New York
1870 Newburgh
John Riley, age 27, Blacksmith. Born Ireland
Elizabeth Riley, age 20, Keeping House. Born New York
Henry Riley, born April 1870. Born New York
Perhaps there isn't a connection with Mary Riley, or John Riley, but I thought I would mention it anyway.
Update. Perhaps this is John in 1860?
1860 Newburgh
Thomas Riley, Labourer, age 60
Cath. Riley, age 50
Ann Riley, age 22, Dress Maker
John Riley, age 21, Moulder (Iron)(?)
Patrick Riley, age 20, Machinist
Charles Riley, age 16, Tinsmith's App
Catharine Riley, age 14
All born Ireland
Mary Riley could have been from this family; she was age 24 in 1860.