Which Ride or Die actor's mother is Irish actress Niamh Cusack?

Calam Lynch is the Ride or Die actor whose mother is Irish actress Niamh Cusack.

Lynch was born in Warwickshire in 1994 to Niamh Cusack and fellow actor Finbar Lynch. He comes from one of Britain and Ireland’s best-known acting families: his maternal grandfather was the celebrated Irish actor Cyril Cusack, while his aunts include Sinéad, Sorcha and Catherine Cusack.

Lynch has built his own screen career rather than relying only on his family connections. His credits include the film Benediction, Disney’s Black Beauty and the second season of Bridgerton, where he played Theo Sharpe. That role introduced him to a much wider international audience.

A common mix-up is confusing Calam Lynch with his cousin Max Irons, another actor from the Cusack-Irons family network. The question asks specifically about Niamh Cusack’s son, making Lynch the single canonical answer.