Dónal Finn

Biography

Dónal Finn is an Irish actor known for playing Mat Cauthon in the Prime Video fantasy series The Wheel of Time (2023). A graduate of the London Academy of Music and Dramatic Art, he has also appeared in SAS: Rogue Heroes (2022), Fantastic Beasts: The Secrets of Dumbledore (2022), originated the role of Orpheus in the West End production of Hadestown (2024), and co-starred as James Moriarty in the Guy Ritchie Amazon series Young Sherlock (2026).

Known For

The Witcher

Nettly

Young Sherlock

James Moriarty

The Wheel of Time

Mat Cauthon

SAS Rogue Heroes

Eoin McGonigal

The Other Bennet Sister

Mr. Hayward

Fantastic Beasts: The Secrets of Dumbledore

Albert (Baker)

Four Letters of Love

Sean Gore

How to Build a Girl

Karl Boden

Filmography

Year	Movie	Role
2025	Four Letters of Love	Sean Gore
2022	Fantastic Beasts: The Secrets of Dumbledore	Albert (Baker)
2020	How to Build a Girl	Karl Boden
2020	Albion	Gabriel
2018	Angel	Killian

Year	TV Show	Role
2026	Young Sherlock	James Moriarty
2026	The Other Bennet Sister	Mr. Hayward
2022	SAS Rogue Heroes	Eoin McGonigal
2021	The Wheel of Time	Mat Cauthon
2019	The Witcher	Nettly