I have very little information to work with here. I live in Southwest Michigan. My father is David Alan Radtke born in St. Joseph, Michigan in 1953. His Father was Victor I Radtke who lived in Michigan until his death in May 1997. Victor's father was Herman Radtke and I have no information on him other than the fact that Herman's brother's name was Art. My father did not know his grandfather because he passed away before he was born in 1953. Any info would help. Thank you.