Do you think the curse on Jeconiah is a valid pointer to the virgin birth?

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How far did the curse extend?

Couldn't the curse pronounced upon Coniah refer to simply the first generation, i.e., his sons?

I am not fluent on the Maccabeean period, but were the Maccabees descendants of Coniah?

Also, I have heard it postulated that, if the line of David had been observed, there was a good chance that Joseph would have been king. Anything to that?