Having heard of his father's death in February 1391, Manuel II Palaiologos fled the Ottoman court and secured the capital against any potential claim by his nephew John VII. Although relations with John VII improved, Sultan Bayezid I blockaded Constantinople from 1394 to 1402. After some five years of siege, Manuel II entrusted the city to his nephew and embarked (along with a suite of 40 people) on a long trip abroad to seek assistance against the Ottoman Empire from the courts of western Europe, including those of Henry IV of England (making him the only Byzantine emperor ever to visit England – he was welcomed from December 1400 to January 1401 at Eltham Palace, and a joust took place in his honour), Charles VI of France, Sigismund the Holy Roman Emperor, Queen Margaret I of Denmark and king Martin of Aragon. In 1399, the French King Charles VI sent Marshal Jean Le Maingre with six ships carrying 1,200 men from Aigues-Mortes to Constantinople; later 300 men under Seigneur Jean de Chateaumorand remained to defend the city against Bayezid.