I always thought lonelyinny was a woman? Kelly is a MAN?
Lonely you should know the answer to this one. You can both acknowledge paternity and it will be legal. The only ones with the standing to challenge the paternity will be the mother, you, and the dead guy.
So with all the holier-than-thou posts you make you have two illegitimate children from an adulterous affair with a dying man's wife! That's a hat-trick you don't want.
He's dead. Do the right thing and acknowledge paternity or if you aren't sure do a quick and easy DNA test and then you will know for sure. No reason to make this a court case if there is no one to object.