The coppy of a letter sent by the rebells in Ireland to the Lord Dillon, to declare to his Maiestie the cause of their taking up of armes. : Together with the coppy of the oath or covenant which the rebells have taken and made, which they sent to the Lord Dillon: whereunto is added a true relation how some of the rebells by treachery have got possession on of the city of Dublin. December 18. 1641.