Original sentence: Because Montrose had very little support in the lowlands, Charles was willing to disavow his most consistent supporter in order to become a king on terms dictated by the Covenanters.In March 1650 Montrose landed in the Orkneys to take the command of a small force, composed mainly of continental mercenaries, which he had sent on before him
Edited sentence: He was willing to disavow his noblest supporter in order to become a king on terms dictated by Argyll and Argyll's adherents.In March 1650 Montrose landed in the Orkneys to take the command of a small force which he had sent on before him