Dee Gee is Dorothy's daughter, Dorothy Gene Hanson, later known, through infants' limited ability to pronounce consonants, as Dee Dee.  Patsy is Bud and Dorothy's younger sister, Patricia Audett.  Mom is their mother, Dorothy Guilfoil Audett.  Eugene is Dorothy's husband, Eugene J. Hanson, working for the Illinois Central Railroad at the time.  Pop is Bud and Dorothy's father, James D. Audett.  Tumbles is a dog.