Hello,Yes I have John and his parents in the 1900 census. They are listed as OBIRST and are living on Wisconsin Street in Toledo, Lucas Co, Ohio. His parents are William and Margaret (?) Oberst/Obirst. William was born Apr1843 Baden, Germany; immigrated 1847 a Painter Margaret was born Jul1839 Bavaria, Germany(the 1880 census lists her as 37 which would make her born abt 1843).
In the 1880 census William,Margaret,George,Frederick,John,Catharine,Margaret and Mary are living in Monroe, Monroe Co, Michigan.