Hall was descended on both sides from Pembrokeshire families; his father was by reputation, if not in fact, ‘a huge pluralist’.
Hall was still going the Oxford circuit in 1809 and remained nominally on the law lists till 1812. In 1806 he came into Parliament for Totnes on the Bolton interest: his father-in-law bestowed £4,200 on him for the purpose.
In 1814 his friends in Glamorgan proposed Hall for the vacant county seat.
