I have found mixed references as well. They are probably the same as you have found but I will give them to you here.
John, died 1781, son of Enoch , married by 1753 Monica Ford, daughter of Robert and Teresa Ford.Ref: Will of Robert FordTA 1:314.
Also from the Family Bible of Fanny Combs which is stated to have been verified and a copy placed at the MD Historical Society,....this was in regard to her application for MD Heraldic Families:"John Fenwick and Monica Ford, John of Robert Fenwick and Susannah Ford, Robert of Cuthbert and Elizabeth Brooke, Cuthbert of Richard and Dorothy Plowden."
To further confuse the issue:Philip, died 1782, son of Enoch and Susannah Ford.