You use evidently to say that something is obviously true, for example because you have seen evidence of it yourself. The man wore a bathrobe and had evidently just come from the bathroom The two Russians evidently knew each other. = clearly, obviously
You use evidently to show that you think something is true or have been told something is true, but that you are not sure, because you do not have enough information or proof. From childhood, he was evidently at once rebellious and precocious = apparently
emphasis You can use evidently to introduce a statement or opinion and to emphasize that you feel that it is true or correct. Quite evidently, it has nothing to do with social background
unmistakably (`plain' is often used informally for `plainly'); "the answer is obviously wrong"; "she was in bed and evidently in great pain"; "he was manifestly too important to leave off the guest list"; "it is all patently nonsense"; "she has apparently been living here for some time"; "I thought he owned the property, but apparently not"; "You are plainly wrong"; "he is plain stubborn"