His eldest did not of course. He won at Agincourt, only to die of dysentery in France 7 years later.
His early death led to the Wars of the Roses.
Henry IV certainly had three more sons who accompanied their brother to France. I cannot remember their names or titles. One may have been the young Henry VI’s Regent.
Perhaps Flashman can remember.
I have said before, I am fond of the Richards and no lover of the Henrys.