Hi MargP,
I found this birth in Nottingham on FS
father: Richard Portor
mother: Elizabeth
Name: Charlotte Elizabeth Portor
Gender Female
Christening Date 16 Sep 1805
Christening Place SAINT MARY,NOTTINGHAM,NOTTINGHAM,ENGLAND
Father's Name Richard Portor
Mother's Name Elizabeth
Indexing Project (Batch) Number C04487-2
System Origin England-ODM
GS Film number 503800, 503801
It is the only Charlotte Elizabeth I can find at the moment in Notts.
Date fits and also Father's name is Richard !
Tracey.