Great-grandparents lived in Passaic NJ, Rose Malec & ADAM DULL (1873-1935). I think he was born in Poland. Adam had a sister who I believe never married, MAGDELENA DULL (1894-1989) from the same area. There may be more siblings that I'm not aware of, possibly spread accross the country. I also have a notation of a JOHN DUL being Adam's father, but have no proof of this.
Rose and Adam had many children: my grandmother JEAN DULL SNAGUSKY, EDWARD DULL, MICHAEL (MICKEY) DULL, ANTHONY (TONY) DULL, BLANCHE DULL SEBECK, SALLY DULL (never married), JOHN DULL and WALTER DOULL. The spelling varies right from the beining, DUL, DULL, DOULL, and in recent generations DUEL. Can anyone help??