Yes, we are of the same Dominisse's. Your father would have been a grandson of William and Mary(Schram) Dominisse. This William(1865-1938) was a brother to my great-great-grandmother, Elizabeth Dominisse(1859-1934) who married Peter Lippold. William and Elizabeth were both the children of Michael and Mary(Schroeder) Dominisse. I believe this makes us 3rd cousins once removed. Hope to hear from you!