Harry, I just looked in my Atlas for Landis Valley. I couldn't pinpoint it, but Landisville is on there. I would imagine Landisville is in the same area. Maybe even in Landis Valley. They would be in Lancaster County, just a little northwest of Lancaster City. I too would like to know about the area. My maternal great-grandmother's family came from that area to Seneca County, Ohio. It would have been prior to 1867, because that is about the time my great-grandmother was born. Their surname was Landis. Patricia (Edwards) Maher almenami@aol.com