Hi Ruskie,
I totally agree with what you say.
My family tree at present looks like this
Robert Smith (1816) and Mary Ann White
Jesse Smith (1775) and Elizabeth Evans (married 1 September 1800, Cam)
John Smyth (1749) and Ann Smith (married 30 May 1774)
Luke Smith (1717) and Elizabeth Joyner (married 4 June 1744, Dursley)
Peter Smith (1694) and Mary Higgins (married 14 July 1715, registered in both Dursley and Coaley)
Peter Smith (1665) and Hannah
Peter Smith (1638, North Nibley) and Sarah North (married 9 October 1662, North Nibley)
John Smith, North Nibley
I have confirmed everything up to peter 1694 but I am still puzzling over Peter 1665 as I dont find a peter married to Hannah,
I do find Peter 1638 and Sarah North with a son Peter 1665 ,but He marries twice the second time to an Ann but then I dont find a son Peter . Somewhat complicated
So I thought to try it from the other direction John Smith North Nibley ,and as you say John Smith and so for back, its a hard nut to crack.