Hello Pughy,
Have checked for Joseph Nield marriages, none exactly right for the dates but:
married Martha Edge 19 Oct 1749 by banns, Tarvin St Andrew
married Margarett Dutton 8 Apr 1751 by banns, Tarvin St Andrew
married Elizabeth Price 18 Apr 1763 at Chester St Bridget
married Christian Perry 25 Apr 1794 at Tarvin St Andrew
Nothing on the index for Ambrose.
Nothing for a Samuel Parsonage within the right timescales.
Jean