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Denis Leary Reveals He's Third Cousins with Conan O'Brien

1/26/2025

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Summary

Story summary

Denis Leary made a surprising revelation on The Tonight Show: he and Conan O’Brien are third cousins, both tracing their heritage back to Killarney, Ireland. The discovery came to light during a family chat while watching O’Brien's show. The duo shared a laugh, playfully likening their resemblance to "two old sisters."

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Story summary

Denis Leary made a surprising revelation on The Tonight Show: he and Conan O’Brien are third cousins, both tracing their heritage back to Killarney, Ireland. The discovery came to light during a family chat while watching O’Brien's show. The duo shared a laugh, playfully likening their resemblance to "two old sisters."