Joseph W. Lahr was married to my grandmother's sister, Rose A. Waters, b. abt. 1897, Philadelphia, PA to James and Catherine(Lawler) Waters. James and Catherine were from N. Ireland. 1930 census has them living in Philadelphia with the following: Rose, dau. age 10, Agnes, dau. age 9, Margaret, dau. age 8. There are two boarders listed as: Veronica Waters, age 29, and William Waters, age 2. Their last residence in 1930 was 3067 Collins St. My grandparents, Charles H. and Bridget C. (Waters) Schweitzer lived at 3065 Collins St.
Rose Lahr had a brother named James J. Waters, b. abt. 1891. His wife's name was Charlotte. James was a police officer in Philadelphia.
Her other siblings were: John E. Waters, b. abt. 1891 and Kate Waters, b. abt. 1893.