My Grandfather's name was John Jr. Yadlosky. and his father's name was John Yadlosky. He had 8 brothers. And they all lived in PA, until my great grandfather came to Michigan to work in the auto industry instead of the coal mines. That was probably in the... late 1800's early 1900's.
We're not sure about the names of the brothers, but Grandpa named a Woman named Eula Ford Davisson. If this seems to ring a bell to anyone, which it may.. post again. :D