From the 1880 census, it appears that your Louisa was the daughter of Charles and Mary A. Bonzer. She was the 7th of 8 children. They lived at 108 Washington st. (not sure if this is Pgh. or Allegheny City [North Side]). Her father Charles was apparently the brother of my g-grandfather, Michael Bonzer, who was 10 years younger. Both families (15 people) were living in the same house.