I found a post of yours on the geneologist's website, as follows:
William oakes / Margaret Griffiths 12th october 1779
William Williams / Mary Oakes 9th nov 1790
Samuel Oakes to Jane Rowlinson 2nd September 1797 all Backford
just found Joseph Oakes with children baptised in Backford also...and Thomas Oakes
That covers 3 marriages with children ~20 years old, so seems credible.
Would like to see details of christenings, too- particularly of Thomas, if, as you say, you found them. And any other information you can provide.