Looking for a path

I have been searching for my grandfather for about I believe almost two years now, and I am at a brick wall.

I have searched census records, bmd records, and every record in my power, and cannot find anything that matches.

The only information I have is from my mothers birth certificate, which about the father, just states the following.


JANUARY 29, 1941

Name : JAMES JOSEPH CUNNINGHAM

AGE : 23

BORN : PHILADELPHIA PA

So my question is, does anyone know where to go from here? I have exhausted everywhere I know to look.

Thank you!

Looking for a path