Looking for Diem Family Members IN New Jersey

HiI am looking for familie members on my Fathers side anyone would be nice akk I know is that my Father as far as he knows was an only child. His Fathers name was Frank Nelson Diem, My Dsds Names was Frank Nelson Diem jr
He was born on August 26, 1926 his mothers Name was Anna Diem her madian name was Roscoe any information would be very helpful.