Sir Benjamin died in March 1780 and, without a son to take on the business, it passed to his grandsons. In 1789, the brewery was taken over by Sampson Hanbury (Hanbury had been a partner since 1780; the Truman family became 'sleeping partners'). Hanbury's nephew, Thomas Fowell Buxton, joined the company in 1808, improved the brewing process, converted the works to steam power and, with the rapid expansion and improvement of Britain's road and rail transport networks, the Black Eagle label soon became famous across Britain (by 1835, when Buxton took over the business upon Hanbury's death, the brewery was producing some of porter a year).