You need to locate a precise place of birth in order to proceed with the research into "old country".
The English Y makes the Czech J sound so that is why your Ceynar but CEJNAR in Czech.
The CZ's phone book is listing CEJNAR.http://phone.quick.cz
You might want to take a look at the 16 CEJNARs manifests that came thru Ellis Island. www.ellisislandrecords.org