Noun which may take the genitive case particle 'no', Noununknown; unidentified

Noun which may take the genitive case particle 'no'anonymous; of unknown authorship

Noun, Noun which may take the genitive case particle 'no'unidentified; name unknown

Noun, Noun which may take the genitive case particle 'no'unknown age; uncertain age; unidentified age

Expressions (phrases, clauses, etc.)dates of birth and death unknown