I have just started researching my family history, and noticed your message of a few months ago. I have traced my mothers side of the family, and have traced ancestry to Thomas Courtney.
I have information on Isabella Courtney, the names of her ten children, and her spouse, Charles Mathes.I also have a brief biography of the Courtney family going back to Thomas Courtney, 1726, probably Monagham Co., Ireland.
My maternal side of the family, Mathes, is: grandfather, Edward Lee Mathes, son of Alfred Courtney Mathes and Susan Alexander. Alfred Courtney, son of Charles Mathes and Isabella Courtney. I have no further information on the Mathes.
Isabella Courtney, daughter of Robert Courtney and Mary Bodley.
I am sure that this may be the same Isabella Courtney that you are refering to.You may already have this info by now, but if not, I'll be happy to share with you what I have.