was revived", notes one account, "and emissaries from Scotland traversed the villages of England, in the last year of Henry's reign, declaring that Richard was residing at the Scottish Court, awaiting only a signal from his friends to repair to London and recover his throne." A suitable-looking impostor was found and King Richard's old groom circulated word in the city that his master was alive in Scotland. "Southwark was incited to insurrection" by Sir Elias Lyvet (Levett) and his associate Thomas Clark, who promised Scottish aid in carrying out the insurrection. Ultimately, the rebellion came to naught. Lyvet was released and Clark thrown into the Tower. Foreign relations Early in his reign, Henry hosted the visit of Manuel II Palaiologos, the only Byzantine emperor ever to visit England, from December 1400 to February 1401 at Eltham Palace, with a joust being given in his honour. Henry also sent monetary support with Manuel upon his departure to aid him against the Ottoman Empire. In 1406, English pirates captured the future James I of Scotland, aged eleven, off the coast of Flamborough Head as he was sailing to France. James was delivered to Henry IV and remained a prisoner for the rest of Henry's reign. Final illness and death The later years of Henry's reign were marked by serious health problems. He had a disfiguring skin disease and, more seriously, suffered acute attacks of a grave illness in June 1405; April 1406; June 1408; during the winter of 1408–09; December 1412; and finally a fatal bout in March 1413. In 1410, Henry had provided his royal surgeon Thomas Morstede with an annuity of £40 p.a. which was confirmed by Henry V immediately after his succession. This was so that Morstede would 'not be retained by anyone else'. Medical historians have long debated the nature of this affliction or afflictions. The skin disease might have been leprosy (which did not necessarily mean precisely the same thing in the 15th century as it does to modern medicine), perhaps psoriasis, or a different disease. The acute attacks have been given a wide range of explanations, from epilepsy to a form of cardiovascular disease. Some medieval writers felt that he was struck with leprosy as a punishment for his treatment of Richard le Scrope, Archbishop of York, who was executed in June 1405 on Henry's orders after a failed coup. According to Holinshed, it was predicted