One way to form earlier family groups is to use....
Men in Armour for Gloucestershire 1608 - which lists all able bodied men fit to fight - giving their approximate age and stature and occupation and what they are 'fit for' The website also gives population tables from 1801 every ten years - which is very useful. You could then cross-check to see if any-one left a Will i.e. **
Giles GOUGH of Michinhampton, Clothier, left a Will in 1666)
http://www.coaley.netSearching for GOUGH - the surname doesn't appear as GOFF at all, just GOUGH or GOUGHE (approx 23 listed)
The youngest age of those given - appears to be aged around 40 - some on the West side of the River Severn - others on the Right hand side - and a couple up on Gloucester & around Cirencester.
At least this gives some idea where the GOUGH's were living.
MITCHELDEAN - has two men : Thomas GOUGH and his son JAMES)
LITTLEDEAN - one man : John GOUGH
COLEFORD - one man : John GOUGH
HEWLESFIELD - one man George GOUGHE and wife listed Mrs Mary GOUGH
WESTBURY ON SEVERN - one man : William GOUGH
WOOLASTON - - 3 lists (George, William inc one WarrenGOUGHE from Huerffild)
ALLASTON (Lydney parish) - one man : Thomas GOUGH
PURTON (Lydney parish) - one man : William GOUGH
BROMSBERROW (Newent) - one man : Anthony GOUGH
LONGHOPE - one man : William GOUGHE
HUNTLEY - one man : Thomas GOUGH
CHELTENHAM - one man : Thomas GOUGH
SLIMBRIDGE - one man : John GOUGHE
ASHLEWORTH - one man : John GOUGHE
ALVESTON (South Glos, Thornbury) - one man : John GOUGH
OLVESTON (South Glos, Thornbury) - one man : Henry GOUGHE
CIRENCESTER - one man : Nicholas GOUGH
MINCHINHAMPTON (Stroud) - two men : **
Gyles GOUGH and William GOUGH
NETHER LYPIATT (In Thrupp parish, Stroud) - one man i.e. Samuell GOUGHE - who seems to have a couple of servants)