Oka, thank you. I remember reading somewhere that +Jospeh's line was something less than clear, but I could have misunderstood.
Jesus grew up in Nazareth, and Joseph was dead when the ministry began. So it would be easy to cast aspersions on his lineage.
Some Protestants think that the Lukan genealogy is of Mary. The Fathers are unified that this is not the case.
Neither Jew nor Greek would have considered a female lineage to be valid.