I got a question for you: Columbo or Lieutenant Columbo is the eponymous main character in the successful detective crime drama series Columbo. He is portrayed primarily by Peter Falk, who appeared in the role from 1968 through 2003. Columbo's first name has never officially been identified, although the name "Frank Columbo" has been visible on pieces of identification throughout the show's history.

Answer this question: what was columbo's first name in the series?
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The relevant information is: Columbo's first name has never officially been identified, although the name "Frank Columbo" has been visible on pieces of identification throughout the show's history.
Therefore, the answer is Columbo 's first name has never officially been identified , although the name `` Frank Columbo '' has been visible on pieces of identification throughout the show 's history.