Re: 2 questions 1 about the surname Radzilowsky
Jim Young told me: "On the subject of the -sky or -ski ending; it was originally adopted by Polish nobles who took their surnames from their estates. As the non-noble status groups took surnames they sometimes imitated this fashion, adding the adjectival ending to names from occupations, etc. It would have been very unusual for a Jew to be Permitted to own land, so any -sky/-ski surnames from place names would be from a place of residence rather than from an estate."