JackNielen
Actor — London
Work
Spencer
Prince William
Directed by Pablo Larraín. Opposite Kristen Stewart. Premiered at the Venice Film Festival 2021.
View on IMDb →Blue Stockings
Ralph Mayhew
By Jessica Swale. Directed by Catriona Hynds. Deerfield Academy, 2025.
Dog Eat Dog
Charlie Flynn
By Mary Gallagher. Directed by Vincent Rougeau. Deerfield Academy, 2026.
Our Country's Good
Ralph Clark
By Timberlake Wertenbaker. Deerfield Academy.
Coming November 2026.
Gallery
About
Jack Nielen is a British actor working across screen and stage. He made his feature film debut as Prince William in Spencer, directed by Pablo Larraín and starring Kristen Stewart.
His stage credits at Deerfield Academy include Ralph Mayhew in Blue Stockings and Charlie Flynn in Dog Eat Dog. He has also been cast as Ralph Clark in the Academy's November 2026 production of Our Country's Good.
Trained in both the US and the UK, Jack is drawn to intelligent, emotionally layered roles and directors who push boundaries.
- Height
- 6'0"
- Age
- 17
- Based
- London