Jeremy Spinrad wrote (2004-02-06 14:51:23 PST):

Chess Monthly, 1857, says that Staunton is playing a
match against an amateur from Mexico. Has anyone ever
heard of such a match?

_
The December 1998 and May 1999 issues of Chess
describe Staunton as playing a "14-game match at
odds against T. H. Worrall in the early weeks of"
1858. Staunton's opponent "had recently returned
to England from Mexico". According to the Oxford
Companion, Worrall was "appointed British Commissioner
in Mexico". There seems to have been some confusion
about when the Staunton-Worrall games were played.
The Keene and Coles book says 1859, and Levy's
Staunton biography says 1860. It would be of some
interest if it could be conclusively demonstrated
that the true year was 1857. Does the 1857 Chess
Monthly describe the match as already in progress
or something that will start soon?