subsequent kings, the number of animals grew to include additional cats of various types, jackals, hyenas, and an old brown bear, Max, gifted to Henry VIII by Emperor Maximilian. In 1436, during the time of Henry VI, all the lions died and the employment of Keeper William Kerby was terminated. Historical records indicate that a semi-circular structure or barbican was built by Edward I in 1277; this area was later named the Lion Tower, to the immediate west of the Middle Tower. Records from 1335 indicate the purchase of a lock and key for the lions and leopards, also suggesting they were located near the western entrance of the Tower. By the 1500s that area was called the Menagerie. Between 1604 and 1606 the Menagerie was extensively refurbished and an exercise yard was created in the moat area beside the Lion Tower. An overhead platform was added for viewing of the lions by the royals, during lion baiting, for example in the time of James I. Reports from 1657 include mention of six lions, increasing to 11 by 1708, in addition to other types of cats, eagles, owls and a jackal. By the 18th century, the menagerie was open to the public; admission cost three half-pence or a cat or dog to be fed to the lions. By the end of the century, that had increased to 9 pence. A particularly famous inhabitant was Old Martin, a large grizzly bear given to George III by the Hudson's Bay Company in 1811. An 1800 inventory also listed a tiger, leopards, a hyena, a large baboon, various types of monkeys, wolves, and "other animals". By 1822, however, the collection included only a grizzly bear, an elephant, and some birds. Additional animals were then introduced. In 1828, there were over 280 representing at least 60 species as the new keeper Alfred Copps was actively acquiring animals. After the death of George IV in 1830, a decision was made to close down the Menagerie on the orders of the Duke of Wellington. In 1831, most of the stock was moved to the London Zoo which had opened in 1828. This decision was made after an incident, although sources vary as to the specifics: either a lion was accused of biting a soldier, or a sailor, Ensign Seymour, had been bitten by a monkey. The last of the animals left in 1835, relocated to Regent's