David Thewlis was 47 in Harry Potter and the Deathly Hallows: Part 2 when he played the character 'Remus Lupin'.
That was over 13 years ago in 2011.
Today he is 61, and has starred in 84 movies in total, 30 of those since Harry Potter and the Deathly Hallows: Part 2 was released.
In Harry Potter and the Deathly Hallows: Part 2, I think David Thewlis looks: