In 1870, Henry and Sarah Altenburg lived in DeKalb County, Indiana. Henry worked as a carpenter. In 1900, Sarah Altenburg, reporting her birth date as Jan 1847 (but should likely be Jan 1849 so that it does not conflict with her brother), and now widowed, was living in Indianapolis, Marion County, Indiana. She stated she had borne 4 children all of whom were alive. Her household included her son John and her 82-year old mother.
From Indiana Federal Census Records:
1900 Indianapolis, Marion County: Sarah C. Altenburg Jan 1847 OH widow 4 children born/4 living, John W. Oct 1875 IN son dentist, Elizabeth E. Bodine Nov 1817 NY mother widow 6 children born, 5 living.
1910 Union Twp., DeKalb County: Sarah C. Altenburg 62 OH widow 2children born/2 living: living with daughter and son-in-law Clara and John Zimmerman.
1920 Union Twp., DeKalb County: Sarah C. Altenburg 72 OH widow.
Burials in Evergreen Cemetery, Auburn, DeKalb County, Indiana
Henry E. Altenburg 1838-1883 (Find A Grave Memorial # 48793372)
Sarah C. Altenburg 1847-1926 (Find A Grave Memorial # 61960981)