Thanks for answering my query & on the info on Abraham G. Mason. I had most of it. I was just trying to find out more about Arthur Hardy on the 1880 Monroe co MO census.
On the 1870 Monroe co MO census, I believe the census taker made a mistake on the name Joseph Hastings. It should be Josephine Hastings, who was a niece of Abraham Gartin Mason.
Abraham G. Mason was my great granduncle.