Found one of my ancestors, Christian Herman, on the 1880 & 1890 census.

The 1890 census reads as follows:
Carl Vilhelm Petersen, 45, born Gladaxe, Kob.
Ane Marie Petersen, 43, born Ostermarie
Christian Herman Petersen, 16, born Ronne
Elisabeth Cecilie Petersen, 12, born Ronne
Vilhelm Andreas Petersen, 10, born Ronne
Anna Marie Petersen, 7, born Ronne
Carl Johannes Petersen, 1, born Ronne

Christian H. & Vilhem A. immigrated to the US by 1900, so do have records for them.

However, except for the fact that Elisabeth married Jorgen
Christensen, have no information on anyone else and was hoping for some help.
Thanks so much.