His elder brother, Thomas Thorne, was an actor and theatre manager, best known as a founding manager of London's Vaudeville Theatre. His nephew was the actor Frank Gillmore, and his great-nieces were the actresses Ruth Gillmore and Margalo Gillmore.
The subject's elder brother, Thomas Thorne, was an actor and theatre manager who co-founded London's Vaudeville Theatre. His nephew, Frank Gillmore, became an actor, while his great-nieces, Ruth and Margalo Gillmore, were actresses.