Tredah (Drogheda), 12th September, 1649.
I offered a mercy to the Garrison of Drogheda, in sending the Governor a Summons before I attempted the taking of it. Which being refused brought their evil upon them.
If you, being warned thereby, shall surrender your Garrison to the use of the Parliament of England, which by this I summon you to do, you may thereby prevent effusion of blood. If, upon refusing this Offer, that which you like not befalls you, you will know whom to blame.