What research have you done - Searched Census - Church Records -
Starting with the current family - and working back - to ensure following the correct family line.
3rd party information - though interesting - may not be absolute -
even info posted to some Genealogy sites - may not be correct - without proper documentation.
Some persons - eager for family tree - may jump to conclusions - and connect unrelated families - Different when family Surnames are very unusual -
Cheers & Good Luck