Hello Rick, have a look at the following websites.

www.napoleon-series.org/cgi-bin/forum/archive2003_config.pl?md=read;id=14882

scroll down to -

23rd (Light) Dragoons see 26th (Light) Dragoons

26th (Light) Dragoons raised 25.03.1795 as R. Manner's; renumbered 1803 as 23rd; disbanded 1819

www.nationalarchives.gov.uk/catalogue/topictermdetail.asp?fldAFGroup=4&fldAFTermID=10832&j=1

www.revwar75.com/crown/foot4.htm

scroll to find 23rd (Light) Dragoons

hope this is of help to you,
Averil