About Alfie Allen
Alfie Evan Allen is an English actor. He portrayed Theon Greyjoy on all eight seasons of the HBO fantasy series Game of Thrones (2011–2019), for which he received a nomination for the Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series in 2019. In film, he is best known for his starring roles in John Wick (2014), The Predator (2018), and Jojo Rabbit (2019). Allen's first professional appearance was in a one-off Channel 4 comedy, You Are Here in 1998, co-written by Matt Lucas and David Walliams.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.