That's one hell of a way to find out! So, his father is both his dad and his sibling, and his other father is both his dad and his grandfather (and will be both dad and great-grandfather to the newborn)?

ultrapleb said:
That's one hell of a way to find out! So, his father is both his dad and his sibling, and his other father is both his dad and his grandfather (and will be both dad and great-grandfather to the newborn)?

And then newborns grandfather will also be their uncle and sibling.

ultrapleb said:
That's one hell of a way to find out! So, his father is both his dad and his sibling, and his other father is both his dad and his grandfather (and will be both dad and great-grandfather to the newborn)?

Got a family tree like a staircase

Will he be able to impregnate his great-grandson/son?

Incest that continue through multiple generations like this is blessed

Their family tree must be a THICKET.