At the time of the 1900 census, widow Clara Theis (30) lived with her parents and younger siblings in the family's home in McKees Rocks, Allegheny County, PA. Clara did not have any children before 1900. She was employed as a dressmaker.
At the time of the 1900 census, 20 year old Frank Burkhart lived with his parents and siblings at the family's home in McKees Rocks, Pennsylvania. He worked as a machinist.