He had come to this country before, the war broke out in 1642. He was then made, probably through the influence of his friend Sir Henry Mildmay, "Advocate of the Army."[13] His great knowledge of Civil Law, which had been much neglected in England in times subsequent to the Reformation, rendered him of great service in his new position of Judge Advocate of the Army. For the same reason he soon afterwards was created one of the judges of the Admiralty Court. He became especially hateful to the Royalists from his having assisted in preparing the charges against Charles the First. In May, 1649, he sailed for Holland as Envoy of the English government to the Hague. He had only spent a short time there, when, while at supper in the Witte Zwaan (White Swan) Inn, some five or six ruffians with their faces hidden by masks, rushed into the room where he, in company with eleven other guests were sitting. Two of these wretches made a murderous attack on a Dutch gentleman of the company, mistaking him for Dorislaus. Finding out their error they set upon the Envoy and slew him with many wounds, crying out as they did so, "Thus dies one of the King's judges." The leader of this execrable gang was Col. Walter Whitford, son of Walter Whitford, D.D. The murderer received a pension for this "generous action"[14] after the Restoration. The English Parliament gave their faithful servant a magnificent funeral in Westminster Abbey, June 14, 1649, but when Charles the Second ascended the throne, his body was disturbed. His dust rests along with that of Admiral Blake and other patriots in a pit somewhere in Saint Margaret's churchyard.[15] Dorislaus, though a foreigner, ought to rank among our great English lawyers, for his services were devoted entirely to his adopted country. Whatever our opinions may be as to those differences which were the forerunners of so much bloodshed and crime, we must bear in mind that many of the foremost men on both sides were actuated by the highest principles of honour. The study of Canon Law had been prohibited in the preceding century, and the Civil Law with which it has so intimate a connection, though not made contraband, was so much discouraged that it is no exaggeration to say that the knowledge of it was confined to a very few. Selden, whose wide grasp of mind took in almost every branch of learning as it was known in his day, is the only English lawyer we can think of who had mastered these two vast subjects. This is the more remarkable as he was of humble parentage; the son of a wandering minstrel it is said, but from the first his passion for learning overmastered all difficulties. It must, however, be borne in mind that according to the custom of those times when his abilities became known, he met with more than one generous patron.