Prince John of Lancaster (so named because he was born in Lancaster) is King Henry's second son. In the play, Prince John is a minor character. He appears to be the complete opposite of his brother, Prince Hal. Prince John is responsible, respected by the nobles at court, and fights courageously at the battle at Shrewsbury. Hal's recognition of his little brother's courage in battle seems significant because Hal outwardly acknowledgement of the importance of his allegiance to his family, rather than the "vile" company he's previously kept with his Eastcheap pals.