"From the text of Wats' second edition [of the Historia major, published 1684] the present translation has been made."--Pref. vol. I, p. vii.
From 1259 "the continuation [v. 3, p. 331-383] is ascribed to Rishanger".--Dict. nat. biog. For a history of the work, cf. Dict. nat. biog. and the authorities to which it refers.