I am wondering if you are looking for Etta Alfretta Vader, born in 1866 to Henry Vader & Sarah Ann Cope. She was their 4th child. Eugene Francis Vader was their 2nd child & he was my great grandfather.
I have found a listing on rootsweb with a name of Henry Bader. It has to be a wrong spelling of the last name. All of the children listed for Henry & Sarah are correct.
Sincerely--Theron Lee Smith