Warchols IN PA and NY

My great grandfather Stanislaw Warchol immigrated to the USA from Poland. I found reference to him as the boarder in a house owned by Mary Yunger (my great grandmother) in oil city in 1900. I know that they moved to the Rochester area of NY and raised their family. I am looking for any information prior to oil city for both of them. (I believe they both came from Galetza Poland (spelling?)