Searching Ancestors of Dorcas Phebe Critchfield Linger Born IN PA Died IN WV

My G Grandmother, Dorcas Phebe Critchfield, was born in Greene County, Pennsylvania in 1860, married William Edgar Linger in November of 1880, and moved to West Virginia, where she died in February of 1944. Her mother, by all family Bible accounts was Ellen Main and her father was apparently John Critchfield. Other than that, I have no information about her parents or earlier relatives. If you can help I'd be grateful.