Middle name Zouch

[Tom Tom]

My ancestor was called John Zouch Walker. For many years, I have wondered about the significance of the Zouch middle name.

John Zouch Walker
Born: 24 Feb 1791 (Middlesex)
Christened: 4 April 1791, St James, Clerkenwell.
Married: 16 April 1816 to Martha Howard, Spitalfields Christ Church, Stepney
Died: 9 May 1849, Bethnal Green.

As far as I can tell, John's parents were Joshua Walker and Susanna Lavender, who married 12 Jan 1789 at St John, Clerkenwell.

Joshua Walker, born c1764 and died 1801 (buried Clerkenwell). Parents unknown.
Susanna Lavender, born 1760 (Dudley), daughter of Stephen Lavender and Mary. Nothing more known.

If anyone has any great ideas - or can see anything I am missing, I would be very grateful.

Of course, there may not be anything in the name, but it feels as though there should be.
Thanks for looking.