Sorry it took so long to reply, I haven't checked this board in years (I pretty much stopped my research 10 years ago, but I am always willing to exchange information with other researchers).
I am Dominic's great-grandson (through his son George Andrew Engelman, and grand daughter Coletta Elizabeth Engelman).
Interesting information. I would love to get the details on Dominic's and Elizabeth's marriage certificate (any other listed relatives listed?). I basically hit a dead end on my research when I hit Dominic and Elizabeth, and have had no luck finding out who either of their parents were.