Hi Meg,
There are three burials for Harpers at Abdon but only one gives an age.
Elisth Harper Bur.22 May 1801 Abdon St Margaret.
Mary Harper Bur. 19 Apr 1822 Abdon St Margaret. age 50
Frances Harper Bur. 25 May 1800 Abdon St Margaret.
I don't know the area so I can't look up adjoining parishes. If you can tell me what they are I will have a look for you.
Yvon-3