Yes, this is the same Jordan. My husband is a grandson of their son, Ross. I haven't had much luck with Jordan's family, either. I do have a copy of his death certificate which lists his father as Isaac and his mother as Louise or Louisa (hard to tell).
I found a census from 1850 which has Isaac, Hadassah, Jordan and Jordan's twin sister Mary on it. Didn't know he had a twin. Other than that, I haven't found anything. There name was spelled Haas on the census, but that could have been the transcriber
If you have any other info, I would love to share with you.
You can e-mail me at firstname.lastname@example.org