Add Palo Pinto County (1880-Precinct 3-157-Image 28) to their places of residence. I don't need to tell you of the challenge you face! The surname is very common in Texas and spelled a variety of ways: Ervin, Erving, Erwin, Irvin, Irvan, Irving, etc. I was born and raised in Morris County and the Irvin(s) were prominent citizens. Unsure of their relationship to those in nearby Upshur County? Good luck!