In this determined defence of the city against a formidable attack, John Crosbie took a leading part, bravely contending against the forces of the foe and fighting fiercely. Twelve aldermen with the recorder were knighted in the field by King Edward IV., and amongst those so honoured were the Lord Mayor of London, William Taylor, and John Crosby. Our hero was no carpet knight, no poor-spirited tradesman and man of peace. Like many other famous citizens of his age, he could don his armour and fight for his King and country, and proved himself a gallant leader of a citizen army, the best sort of army in the world. He was a devoted adherent of the House of York, and a favourite of Edward IV., who sent him on an important embassage to the Duke of Burgundy, who had married Elizabeth of York, the King's sister. The secret object of the mission was an alliance against Francis I. of France. The embassy was also sent to the Duke of Brittany with the same object, and also to secure the persons of the Earls of Richmond and Pembroke, who had taken refuge in France, and there felt themselves secure. The future Richard III. was nearly persuaded to return to England; his foot was almost on the ship's deck, when, fortunately for him, his voyage was prevented. If he had continued his journey he would never have worn a crown, as he would have lacked a head whereon to place it. Sir John Crosby not long before his death began to build the beautiful house in Bishopsgate "in the place of certain tenements, with their appurtenances let to him by Alice Ashfield, Prioress of St. Helen's.... This house he built of stone and timber, very large and beautiful, and the highest at that time in London," as Stow records. The whole structure was known as Crosby Place, and rivalled the dimensions of a palace. All that remained of this magnificent building was the Hall, together with the Council Room and an ante-room, forming two sides of a quadrangle. It was built of stone, and measured 54 feet by 27 feet, and was 40 feet in height. The Hall was lighted by a series of eight Perpendicular windows on one side and six on the other, and by a beautifully-constructed octagonal bay window. It had a fine roof of exquisite workmanship richly ornamented, and a wide chimney. Much of the original stone pavement had vanished. The Council Chamber was nearly as large as the hall, being only 14 feet less in length. Crosby Hall has been the scene of many notable historic scenes. In the play of "Edward IV." by Heywood, Sir John Crosby figures as Lord Mayor of London, a position which he never occupied, and the King dines with him and the Alderman after the defeat of the rebel Falconbridge at Crosby Hall. He had just received the honour of knighthood, and thus muses:-- "Ay, marry, Crosby! this befits thee well. But some will marvel that, with scarlet gown, I wear a gilded rapier by my side."