Quote:How could Joseph even know he was of the "House of David"? We're talking about fifty generations here, with many impostors claiming descent in the meantime because the "House of David" was the biblically approved monarchical bloodline.
According to what I have read, these kind of things were important for jews, who took their ancestry and family tree very seriously. It seems like Josephus had knowledge of his own tree, for example. So it is not implausible that Joseph had this knowledge.