The Municipal Borough of Twickenham was a local government district in Middlesex, England from 1868 to 1965.
It is now part of the London Borough of Richmond upon Thames
The Wikipedia page is [1]
Film on the Borough's Charter Day [2].
An obituary of the Urban District/Municipal Borough engineer Frederick W Pearce, died 1928 here.
See also List of Mayors of Twickenham