Complex sentence: John is depicted as "a weak leader", influenced by his mother Dervorguilla of Galloway, while his rival Robert de Brus, 5th Lord of Annandale is depicted as a "noble hero".
Split into simpler sentences: John is depicted as "a weak leader", influenced by his mother Dervorguilla of Galloway. While his rival Robert de Brus, 5th Lord of Annandale is depicted as a "noble hero".