Isabella's maiden name was McAllister. A Janie Johnston contacted me about her. There is the possibility that Isabella is in my McAllister line. I had a William McAllister in Mauck Chunk PA next to Summit Hill there 1848 to 1850. Martin and Isabella was in Wright County MO in 1880. My McAllster line came from Ballywillin Parrish in Londonderry. I have a little more if you contact me.