HI Murielle,
I wondered did you get any further with your research?
I believe I have the same Moses Matchett (Catherine's father?)in my family tree. He would be my GGG Grandfather.
Quite a distinctive name!! I have managed to trace back as far as him but no further yet.
Moses' son William married an Elizabeth Martin and they had a child called Agnes. Agnes then married a William Hagans. I am still in touch with, but not close to, 2 of their remaining 3 children, my great aunt and uncle, who are currently in a nursing home in Belfast. Unfortunately they cannot provide much in the way of family records but I would love to know more. They did not marry so there is no-one else that I know of in the family.
M