I've found a Richard in Minchinhampton in 1841 (see below). But I have no way of knowing if he is the same Richard as the one that married Elizabeth Shipway. The image on the stone confuses matters by not saying how or if Sarah was related to Richard. I think I would also need to find a death for Elizabeth Gardiner (née Shipway) and hope its before Richard marries Sarah.
I could assume it is, but this is Mrs Sikes tree and I'm still hearing about 'Castle Combe gate' where I was 99% sure the ancestor came from there,only to find out it was the next village across (after a trip to Castle Combe

):
First name(s) Richard
Last name Gardener
Sex Male
Age 60
Birth year 1781
Birth county Gloucestershire
Birth county as transcribed GLOUCESTERSHIRE
Birth place other England
Occupation -
Full address Pinfarthings, Minchinhampton, Stroud, Gloucestershire, England
Street Pinfarthings
Parish or township Minchinhampton
City or borough Stroud
County Gloucestershire
Country England
Registration district Stroud
Sub district Minchinhampton
Archive reference HO107
Piece number 362
Book number 6
Folio number 4
Page number 2
Schedule 1677
Record set 1841 England, Wales & Scotland Census
Category Census, land & surveys
Subcategory Census
Collections from Great Britain, England