You state Cecelia and ERnst married........
A quick search shows they had sons August and Albert. There may be more children. Realize you state her father is John per her death certificate.
Did she have a son John/Jan ?? If not it is possible the death certificate is wrong.
Looking for information on Cecelia TENÖVER (TENOEVER) (TEN OVER). Cecelia was born on 12 Jan 1868 in Netherlands. She immigrated to the USA about 1881.
Cecelia TENÖVER married Ernst HERTZENBERG on 05 Mar 1891 in Hamilton County, Ohio, USA. Her death certificate says her father was John N TENOEVER and her mother was Gertrude (Unknown maiden name).
Any help would be appreciated in this search.