The codicil for the will of Richard Hall was signed 26 Dec 1848 so the man who died the year before clearly can't be the testator! As you said, perhaps a son?

So, where's the death for testator Richard? The will was proved 3 July 1851.

I can't find a death either, Merry. I have searched in FMP and on the GRO.

On FMP there's a notice in the Hampshire Telegraph 15 March 1851 asking for people with claims on the estate of the late Richard Hall of Liphook Hants to apply to an Auctioneer in Petersfield.

I wondered if there might be a connection between Richard Hall's wife and Sarah Thomason's mother (like matching surnames?!)

If course deciding which Richard Hall marriage(s) belong to the Richard Hall who should have died 1849/51 isn't straightforward........

Richard Hall's will states he wants to be buried at Bramshott, but I couldn't find the burial here:

http://freepages.genealogy.rootsweb....amshotBurs.htm

Sarah White's burial in 1843 is there.

Yes, I wondered about a family connection too.

First name(s) RICHARD
Last name HALL
Marriage year 1798
Marriage day 13
Marriage month Jul
Place BRAMSHOTT
Groom's first name Richard
Groom's last name Hall
Bride's first name Judea
Bride's last name Beall
Groom's notes
Bride's notes
Parish Bramshott
County Hampshire
Country England
Record set Hampshire Marriages

Going by the probate testimony, Richard Hall was living in Trotton, Sussex, when he died, so his death could be the one in Apr-Jun 1850 Midhurst district, age 73.

First name(s) RICHARD
Last name HALL
Marriage year 1824
Marriage day 12
Marriage month May
Place BRAMSHOTT
Groom's first name Richard
Groom's last name Hall
Bride's first name Maria
Bride's last name Chandler
Groom's notes
Bride's notes
Parish Bramshott
County Hampshire
Country England
Record set Hampshire Marriages

So he would have been born c. 1777. This would tie in with the 1798 marriage.