"Who cannot want the thought how monsterous," etc.
This is evident nonsense; "yet," says Mr. Dyce, "I believe the text is not corrupt. Shakespeare was sometimes incorrect in these minutiæ." Shakespeare, however, never wrote nonsense; and if we read We for 'Who,' we have the very word he wrote, and most excellent sense.
"Is gone to pray the holy king [up]on his aid."
"Hath so exasperate their king that he."
For 'their' we must of course read the.