Martha "Patty" Scott

I agree with you that Martha Simison Scott Irwin died on March 8, 1882. She is buried in Andrew Iowa next to her first husband James Scott. But her maiden name is Simison, not Simpson. Her family nickname was Patty, and her father, Robert Simison, was a Brig. General in Ohio who died young in 1807 leaving his wife with eight young children, mostly girls. After James Scott died in 1855, Martha married Luke Irwin in 1858, and Luke died in 1866.