No, he never even married or had any decent relationships.
he had an illegitimate daughter.
No. Leonardo WAS an illegitimate child but he never had any children himself.
While a lot is known about John F. Kennedy some thing are not. If he had any illegitimate children is not known to the public.
He had no children.
None from what I've read
He doesn't have any that the general public, including myself, knows about.
Lois Lowry has four children.
Pope John Paul II had no illegitimate children.
There are no widely recognized records or credible evidence to suggest that Archduke Franz Ferdinand of Austria had any illegitimate children. His personal life was relatively private, and he was married to Sophie, Duchess of Hohenberg, with whom he had three legitimate children. While rumors and speculation can arise regarding historical figures, no substantial proof has emerged regarding any illegitimate offspring.
Yes, three children: John, Peter and Anne.
Illegitimate children as opposed to adopted children, should be able to determine who their parents are.
Nope.. complete fiction. That's not to say he didn't have any illegitimate children though, quite likely he did.