He was also a keen gardener throughout his life; during his last years at Tapton House, he built hothouses in the estate gardens, growing exotic fruits and vegetables in a 'not too friendly' rivalry with Joseph Paxton, head gardener at nearby Chatsworth House, twice beating the master of the craft. George Stephenson had two children. His son Robert was born on 16 October 1803. Robert married Frances Sanderson, daughter of a City of London professional John Sanderson, on 17 June 1829. Robert died in 1859 having no children. Robert Stephenson expanded on the work of his father and became a major railway engineer himself. Abroad, Robert was involved in the Alexandria–Cairo railway that later connected with the Suez Canal. George Stephenson's daughter was born in 1805 but died within weeks of her birth. Descendants of the wider Stephenson family continue to live in Wylam (Stephenson's birthplace) today. Also relatives connected by his marriage live in Derbyshire. Some descendants later emigrated to Perth, Australia, with later generations remaining to this day. Britain led the world in the development of railways which acted as a stimulus for the Industrial Revolution by facilitating the transport of raw materials and manufactured goods. George Stephenson, with his work on the Stockton and Darlington Railway and the Liverpool and Manchester Railway, paved the way for the railway engineers who followed, such as his son Robert, his assistant Joseph Locke who carried out much work on his own account and Isambard Kingdom Brunel. Stephenson was farsighted in realising that the individual lines being built would eventually be joined together, and would need to have the same gauge. The standard gauge used throughout much of the world is due to him. In 2002, Stephenson was named in the BBC's television show and list of the "100 Greatest Britons" following a UK-wide vote, placing at no. 65. The Victorian self-help advocate Samuel Smiles had published his first biography of George Stephenson in 1857, and although attacked as biased in the favour of George at the expense his rivals as well as his son, it was popular and 250,000 copies were sold by 1904. The Band of Hope were selling biographies of George in 1859 at a penny a sheet, and at one point there was a suggestion to move George's body to Westminster Abbey. The centenary of George's birth was celebrated in 1881 at Crystal Palace by 15,000 people, and it was George who was featured on the reverse of the Series E five pound note issued by the Bank of England between 1990 and 2003.