Having a biological son, you assure us, is the most transformational experience you've ever had.

No other contemporary evidence exists to support the argument that Henry was the king's biological son.

He had one biological son, Richard, from a previous relationship.

There had been a time, not long ago, when his biological son could hardly stand to be in the same room with him.

Robbie is revealed to not be the biological son of George.

Their marriage produced three children; two biological sons and an adopted daughter.

This way, Rosanna and himself could raise his biological son.

However nearly 23 years later after this incident he finally meets her biological son.

He is also Frank's roommate and possibly his biological son.

"The bad news is, Doug's not his father's biological son."