Looking for Descendants of Wilheim Dietrick of Germany

Wilheim Die4trick was a Baron in Dresden Germany. Three of his sons came to Philadelphia. Elias came first in the 1730's or 40's. He left his three sons with two of his brothers.

He married a woman when he was in Philadelphia. He settled in Northampton County,PA. When his two brothers came over they brought his sons with them. I am trying to figure out which of his sons my
Elias is a descendant of. He was born in 1816 and died in Towanda, Bradford County,Pa. in 1897. i think his father was John Dietrick.

Elias married Julie Everett from Lynn Township,Northampton,PA.
They had my great-grandfather Alfred F. Dietrick. He died in Northampton.