。
Mr. Kudō Kōjin is a born poet.
Literal
Kudo Kojin-[formal-suffix-氏] [topic-は] born-while-[ながら]-[attributive-の] poet is-[formal-copula-である].
生まれながら ('from birth, by nature, innately') uses ~ながら in its classical/literary sense of 'while X, in the state of X.' ~ながら has two main senses: (1) simultaneous action 'while X-ing' (meeting), (2) this classical 'as one is, by nature.' ~ながらの turns it into an attributive. である is the formal copula. A critical compliment.