I ran into some Leob's or Loeb in Canton, Madison County, Mississippi. A Jacob Loeb, who had a plantation down there. He was born in France 1827 and came to America in 1855. Purchased some land and raised a large family. He passed in 1910 and my family were, at that time, sharecroppers on the land. In 1925, the family sold 40 acres of the land to my grandfather. You probably can locate them in the US census in 1900 in Madison County, Mississippi. I am not sure if they are related to the folks born in PA, but he did have a lot of children who may have moved once they were married. good luck