Unfortunately I dont have a great deal of information however the following is what I have.
John MASON & Frisworth had at least three children being:
John bap 26 Dec 1670 at Whissendine, Rutland
Thomas bap 7 Feb 1674 as above
William bap 3 Jun 1677 as above
John married Eleanor DENT 6 Oct 1694 as above
Thomas does not appear to marry
William married Mary MASON 27 Apr 1710
And that is all I have to offer unfortunately. Hoping someone with better skills than I can assist.
I will also post this to the Northamptonshire board as the family seemed to cross between the places.
Westy