Searching for NJ Birth Parents

Searching for husband's birth parents, he was born in Elizabeth NJ on August 22, 1970. We believe his birth name was Alan/Allen, birth mother is Janet (19), birth father is Robert (21, Vietnam). We believe Janet is 1 of 5 siblings, and Robert is 1 of 10 siblings. Maternal grandmother is violet. He was adopted through Catholic Charities, searching for anyone who can help!