Commander Quattrone from Da Vinci's Demons

Ross O'Hennessy,  his wife Emma and their son Saxon at the world premier of KNIGHTS OF THE DAMNED 

Ross O'Hennessy and Kristofer Hivju in Game of Thrones (2011)

Ross O'Hennessy, Simon Armstrong, and Kit Harington in Game of Thrones (2011)

Still of Ross O'Hennessy in Our Father (2015)

Ross O'Hennessy as  Rattleshirt the Lord of Bones

Game of Thrones Season 5

Ross O'Hennessy as The Lord of Bones. Game of Thrones season 5

Ross O'Hennessy in Da Vinci's Demons (2013)

Ross O'Hennessy King Richard the Lion Heart Feature Film - The Crusades.

Scott Adkins, Ray Park, Ray Stevenson, Michael Jai White, Ross O'Hennessy, Amy Johnston, and Ashley Greene in Accident Man (2018)

David Paymer, Scott Adkins, Ray Park, Ray Stevenson, Michael Jai White, Ross O'Hennessy, Amy Johnston, and Ashley Greene in Accident Man (2018)