Note 074

Yet he was guilty in the opinion of the Moslems, who attest the confession of the assassins, that they were sent by the king of England, (Bohadin, p. 225;) and his only defence is an absurd and palpable forgery, (Hist. de l'Academie des Inscriptions, tom. xv. p. 155 - 163,) a pretended letter from the prince of the assassins, the Sheich, or old man of the mountain, who justified Richard, by assuming to himself the guilt or merit of the murder.
Extra note by the Rev. H. H. Milman 1782(Written), 1845(Revised):
Von Hammer (Geschichte der Assassinen, p. 202) sums up against Richard, Wilken (vol. iv. p. 485) as strongly for acquittal. Michaud (vol. ii. p. 420) delivers no decided opinion. This crime was also attributed to Saladin, who is said, by an Oriental authority, (the continuator of Tabari,) to have employed the assassins to murder both Conrad and Richard. It is a melancholy admission, but it must be acknowledged, that such an act would be less inconsistent with the character of the Christian than of the Mahometan king.
The History Of The Decline And Fall Of The Roman Empire Fall In The EastChapter 59