Looking for info on Matthew Joseph Bauer in NJ

I am looking for relatives, etc.. of Matthew Joseph Bauer, who lived in Camden, NJ and died in December 1979.He was a WWII vet, as well.

Matthew is my grandfather and I am trying desperately to find out the information for his parents but am having no luck.

My parents divorced when I was very young and I do not have contact with my father's family (not my choice).

If anyone has ideas on how to locate info (I would love to see a marriage license, etc.. but do not know my grandmother's name).

If I want a copy of my father's birth certificate, I need to know my grandmother's name.

Thanks!