While in Birmingham, with his friend Albert Smith, then author and afterwards a successful showman, he visited Stratford-on-Avon, where lived and wrote the greatest of English poets--Shakespeare. While breakfasting at the Red House Inn, at Stratford, they called for a guide-book of the town, and to Barnum's great delight the volume proved to be Washington Irving's "Sketch-book." His pleasure was even more increased when he discovered, on reading the vivid and picturesque description of Stratford, that Irving had stopped at the very same hotel where they were awaiting breakfast. After visiting the house as well as the church where is the tomb of the poet, they took a post-chaise for Warwick Castle, fourteen miles away. The Earl of Warwick and his family being absent, the visitors were shown through the apartments. One guide took them over the Castle, another escorted them to the top of "Guy's Tower," another showed them the famous Warwick Vase. They were congratulating themselves on not being called upon for any more tips, when the old porter at the lodge informed them that for a consideration he could show them more interesting things connected with the Castle than any they had yet seen. They tossed him his fee, and he produced what purported to be Guy of Warwick's sword, shield, helmet, breastplate, walking-staff, etc. The armor must have weighed two hundred pounds and the sword alone one hundred. Barnum listened, and gazed in silence at the horse-armor, large enough for an elephant, and a pot called "Guy's porridge-pot," which could have held seventy gallons, but when the old man produced the ribs of a mastodon which he declared had belonged to a huge dun cow, which had done much injury to many persons before being slain by the dauntless Guy, he drew a long breath, and feelingly congratulated the old porter on his ability to concentrate more lies than anyone had ever before heard in so small a compass. "I suppose," said Barnum, "that you have told these marvellous tales so often that you almost believe them yourself." "Almost," answered the old man, with a broad grin. "Come now, old fellow," continued Barnum, "what will you take for the entire lot of these old traps? I want them for my Museum in America." "No money would buy these priceless relics of a bygone age," replied the porter, leering. "Never mind," exclaimed the showman; "I'll have them duplicated for my Museum, so that Americans can see them without coming here, and in that way I'll burst up your old show." The porter was paralyzed with astonishment at this threat, and Albert Smith was convulsed with laughter. He afterwards told Barnum that he first derived his idea of becoming a showman from this day at Warwick, and Barnum's talk about his doings and adventures in the business.