I have all the census records of this family.
Like I said Jacob SR was my husband's ggg-grandfather's brother.
William Dohn had 16 children and was a butcher in New York and North Dakota.
I have the ship manifest when they came over from Germany in 1886. Jacob SR was 11. His parents were Heinrich Dohn and Catherina Hoffman.
They had Jacobina, Wilhelm, Jacob, Catherina, Maria, Barbara, Henry, and maybe more since I just now am ordering the christening records.
There are many Dohn's still in North Dakota. I have a picture of William Dohn and his kids
Please stay in touch. We will need to probably need to share information so we can piece our family together.