BISHOP'S CASTLE, a market and borough-town in the hundred of Purslow and county of Salop, 160 miles from London. It is on the river Clun, which runs to the Severn. Being on the main road between England and Wales, it has some trade, especially at its market, which is held every Friday. It returns two members to the House of Commons, who are chosen by the burgesses resident and non-resident, and supposed to be influenced by Lord Powis. The inhabitants amounted in 1801 to 1076, in 1811 to 1313, and in 1821 to 1616.