Hi Vermont, This is just a guess (I couldn't find the expression in the dictionaries, not even on google) I think that it means that the man in question has a reputation or the roots -perhaps his origins (his family is well known and appreciated). That he is not a no-name.
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MrPedanticYes; I think Adam was made out of dust and spittle.I think the spittle was from another story about healing a blind man.