A true relation at large of the whole proceedings during the imprisonment of Cornelius de Witt, old burgermaster of the city of Dort, ruwaert of the country of Putten, &c. : as also the sentence past upon him : together with a full account of the massacre committed upon the said Cornelius de Witt and his brother John de Witt, late rate pentionaries of Holland and West-Friesland, upon the 20th of August, 1672, at the Hague.