Like most things it varies, I suspect you will find out why he was there and how long. I have seen one where a description of the "convict" was given....

Here are 2 I found in my searches, it might help to show you what can be found on them

Gloucester Goal Records
Joseph IRELAND 18th October 1852
Q/Gc6/2

Name Joseph IRELAND
Age 20
Parish Bisley

Charge
Charged with feloniously stealing at Bisley on the 17th October1852 fifteen pears* the property of John ALDUM*

Description
Light sandy hair, light grey eyes, long visage and fair complexion. Scar centre of forehead, left side of forehead, pockmarked*
5ft 9

Occupation
Plasterer

Trial
GUILTY
R UYATT* Esq

Sentence
14 days hard labour in penitentiary
Term Expired November 1st 1852

Behaviour
Orderly

Comments
Native of Bisley, Single, he had been working for Mr IRELAND his uncle for last 6 years
“Church”

.............

Gloucester Goal Records
William IRELAND 19 th March 1836
Q/Gc5/5

Name William IRELAND
Age 15
Parish Bisley

Charge
Charged on the Oath of William DANGERFIELD and others with feloniously stealing at Stroud on the 18th day of March instant about three quarters of a hundred weight of oat* the property of the said William DANGERFIELD

Description
Light brown hair, grey eyes, long visage and thin fair complexion. Cast in the left eye, large flesh mark on right thigh
4ft 10

Occupation
Bone Gatherer

Trial
Sent to assizes March 29th 1836
NOT GUILTY
Discharged 1st April 1836

Sentence

Behaviour
Indifferent

Comments