Joseph Williamson, English businessman and philanthropist (d. 1840)
Joseph Williamson (10 March 1769 – 1 May 1840) was an eccentric English businessman, philanthropist and property owner who is best known for the Williamson Tunnels, which were constructed under his direction in the Edge Hill area of Liverpool, England. His philanthropy earned him the nickname the King of Edge Hill, whilst his tunnel-building activity earned him posthumous nicknames, including the Mole of Edge Hill and the Mad Mole.