natural parent

It would be so nice to have a natural parent that was really interested in his daughter's affairs.

They are thrown to the cannibal for prey, and the natural parent prepares the unnatural repast.

Mr. Hastings passes by his natural parent, and appoints another woman.

How could he choose for his second father the very man who had deprived him of his first and natural parent?

Constraint, he said, is the natural parent of resistance, and a pregnant proof that reason is not on the side of those who use it.