Writer-director-actor Kenneth Branagh has been playing Belgian detective Hercule Poirot for several years now, including the recently released A Haunting in Venice, and his age more or less aligns with his onscreen counterpart’s, give or take a few years perhaps. Branagh has adapted Agatha Christie’s Murder on the Orient Express, Death on the Nile, and A Haunting in Venice, which is loosely based on the author’s Hallowe’en Party. Branagh has not slowed down in his filmmaking endeavors, and playing Hercule Poirot has been one of his most memorable roles to date. It’s a role he has really come into after three films.
https://screenrant.com/how-old-kenneth-branagh-age-hercule-poirot-movies/