Mersey, river rising in NW. Derbyshire, flows westward 70 m. between Lancashire and Cheshire to the Irish Sea; is of great commercial importance, having Liverpool on its estuary; its chief tributary is the Irwell, on which stands Manchester.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Merry Monarch * Merthyr-Tydvil