Bette, I too, have been trying to find information on Agnes (Kelly) Alexander, but have not had any luck. I am a descendant of Alex Alex and Agnes through Joseph, John O, John C.
I have tried everything I know of to obtain information on Agnes, including traveling to Fulton County, Pennsylvania. It is apparent that she preceeded Alexander Alexander in death, as his will leaves everything to children, grandchildren and in-laws. I will continue to try locating information on Agnes and will let you know if I am successful. I would appreciate it if you would do the same.