« Reply #5 on: Saturday 11 October 25 18:02 BST (UK) »
How far back have you gone before you feel you are hitting dead ends? Once you get back before circa 1800 it starts to get murkier, especially for ancestors with common surnames. Or the ancestors who reached the 1841 census but said "not born in county" of residence on the census, but died before the 1851 census, the first really useful census.
You can try the DNA route, and perhaps search for any poor law records as well as wills and manorial records. Also try tracing witnesses to marriages, who were often relatives but in many cases not always.
Sadly in some cases it can be almost impossible to trace back any further than what you have got. I have 3 ancestors who said "not born in county" of residence in 1841 and all died by 1851, one died just weeks before the 1851 census in late March. One of them was a Smith as well.
Researching:
LONDON, Coombs, Roberts, Auber, Helsdon, Fradine, Morin, Goodacre
DORSET Coombs, Munday
NORFOLK Helsdon, Riches, Harbord, Budery
KENT Roberts, Goodacre
SUSSEX Walder, Boniface, Dinnage, Standen, Lee, Botten, Wickham, Jupp
SUFFOLK Titshall, Frost, Fairweather, Mayhew, Archer, Eade, Scarfe
DURHAM Stewart, Musgrave, Wilson, Forster
SCOTLAND Stewart in Selkirk
USA Musgrave, Saix
ESSEX Cornwell, Stock, Quilter, Lawrence, Whale, Clift
OXON Edgington, Smith, Inkpen, Snell, Batten, Brain