Daniel Lambert (13 March 1770 – 21 June 1809) was an English gaol keeper and animal breeder from Leicester, famous for his unusually large size. After serving four years as an apprentice at an engraving and die casting works in Birmingham, he returned to Leicester around 1788 and succeeded his father as keeper of Leicester's gaol. He was a keen sportsman and extremely strong; on one occasion he fought a bear in the streets of Leicester. He was an expert in sporting animals, widely respected for his expertise with dogs, horses and fighting cocks.
At the time of Lambert's return to Leicester, his weight began to increase steadily, even though he was athletically active and, by his own account, abstained from drinking alcohol and did not eat unusual amounts of food. In 1805, Lambert's gaol closed. By this time, he weighed 50 stone (700 lb; 320 kg), and had become the heaviest authenticated person up to that point in recorded history. Unemployable and sensitive about his size, Lambert became a recluse.
In 1806, poverty forced Lambert to put himself on exhibition to raise money. In April 1806, he took up residence in London, charging spectators to enter his apartments to meet him. Visitors were impressed by his intelligence and personality, and visiting him became highly fashionable. After some months on public display, Lambert grew tired of exhibiting himself, and in September 1806, he returned, wealthy, to Leicester, where he bred sporting dogs and regularly attended sporting events. Between 1806 and 1809, he made a further series of short fundraising tours.
In June 1809, he died suddenly in Stamford, Lincolnshire. At the time of his death, he weighed 52 stone 11 pounds (739 lb; 335 kg), and his coffin required 112 square feet (10.4 square metres) of wood. Despite the coffin being built with wheels to allow easy transport, and a sloping approach being dug to the grave, it took 20 men almost half an hour to drag his casket into the trench, in a newly opened burial ground to the rear of St Martin's Church. While others have since overtaken Daniel Lambert's record as the heaviest person in history, he remains a popular character in Leicester, and in 2009 was described by the Leicester Mercury as "one of the city's most cherished icons".
Daniel Lambert was born at his parents' house in Blue Boar Lane, Leicester, on 13 March 1770. His father, also named Daniel Lambert, had been the huntsman to Harry Grey, 4th Earl of Stamford, and at the time of his son's birth was the keeper of Leicester's gaol. The eldest of four children, Daniel Lambert had two sisters, and a brother who died young.
At the age of eight he was a keen swimmer, and for much of his life he taught local children to swim. Lambert's paternal uncle—like his father—also worked with animals, but as a professional gamekeeper; his maternal grandfather was a breeder of champion fighting cocks. Lambert grew up with a strong interest in field sports, and was particularly fond of otter hunting, fishing, shooting and horse racing. From his early teens, Lambert was a keen sportsman and by his late teens he was considered an expert in the breeding of hunting dogs.
In 1784, he was apprenticed to Messrs Taylor & Co, an engraving and die casting works in Birmingham owned by a Mr Benjamin Patrick. The engraved buckles and buttons in which Patrick's factory specialised became unfashionable, however, and the business went into decline. In 1788, Lambert returned to Leicester, to serve as his father's assistant at the gaol (some sources date Lambert's return to Leicester to 1791, following the destruction of the building housing Messrs Taylor & Co in the Priestley Riots of July 1791). His father retired soon afterwards and Lambert succeeded him as gaol keeper. The younger Daniel Lambert was a much-respected gaoler; he befriended many of the prisoners, and made every effort to help them when they went to trial.
Although by his own account Lambert did not eat unusually large amounts of food, at about the time of his return to Leicester his weight began to increase steadily, and by 1793, he weighed 32 stone (450 lb; 200 kg). Concerned for his fitness, in his spare time he devoted himself to exercise, building his strength to the point where he was able to easily carry five long hundredweight (560 lb; 250 kg). On one occasion, while he was watching a dancing bear on display in Blue Boar Lane, his dog slipped loose and bit it. The bear knocked the dog to the ground, and Lambert asked its keeper to restrain it so he could retrieve his wounded animal, but the keeper removed the bear's muzzle so it could attack the dog. Lambert reportedly struck the bear with a pole and with his left hand, punched its head, knocking it to the ground to allow the dog to escape.
Despite his increasingly large girth, Lambert remained fit and active, once walking 7 miles (11 km) from Woolwich to the City of London "with much less apparent fatigue than several middle-sized men who were of the party". Although not particularly agile, he was not significantly restricted by the size of his body, and was able to stand on one leg and kick the other to a height of 7 feet (2.1 m). He continued to teach swimming in Leicester, and was able to stay afloat with two grown men sitting on his back. He disliked changing his clothes, and each morning habitually wore the clothes he had worn the day before, regardless of whether they were still wet; by Lambert's own account he suffered no colds or other ill effects from this behaviour.
By 1801, Lambert's weight had increased to about 40 stone (560 lb; 250 kg), and, as his bulk meant neither he nor his horse were able to keep up with the hunt, he was forced to give up hunting. He continued to maintain an interest in field sports, keeping a pack of 30 terriers. By this time, although he retained his solid reputation as a gaoler, serious concerns were being raised about his fitness for the post. Traditional gaols were falling out of favour and being replaced with forced labour institutions, and in 1805, the old Bridewell gaol was closed. Lambert was left without a job, but was granted an annuity of £50 (about £3,700 as of 2025) a year by the Leicester magistrates, in recognition of his excellent service as gaol keeper.
Lambert's girth was then enormous; six men of normal size could fit together inside his waistcoat, and each of his stockings was the size of a sack. His £50 annuity did not adequately cover his living costs, and his size prevented him from working. He became a virtual recluse. Stories of his bulk had by then begun to spread, and travellers visiting Leicester would use various pretexts to visit his home. One such visitor asked Lambert's servant to allow him entry as he wished to ask Lambert's advice about fighting cocks; Lambert leaned out of the window and told the servant to "tell the gentleman that I am a shy cock". On another occasion, he admitted into his house a Nottingham man who sought his advice about a mare's pedigree; on realising the man was visiting only to look at him, Lambert told him that the horse in question was "by Impertinence out of Curiosity".
Sensitive about his weight, Daniel Lambert refused to allow himself to be weighed, but sometime around 1805, some friends persuaded him to come with them to a cock fight in Loughborough. Once he had squeezed his way into their carriage, the rest of the party drove the carriage onto a large scale and jumped out. After deducting the weight of the (previously weighed) empty carriage, they calculated that Lambert's weight was now 50 stone (700 lb; 320 kg), and that he had thus overtaken Edward Bright, the 616-pound (279 kg) "Fat Man of Maldon", as the heaviest authenticated person in recorded history.
Despite his shyness, Lambert badly needed to earn money, and saw no alternative to putting himself on display, and charging his spectators. On 4 April 1806, he boarded a specially built carriage and travelled from Leicester to his new home at 53 Piccadilly, then near the western edge of London. For five hours each day, he welcomed visitors into his home, charging each a shilling (about £3.88 as of 2025).