At age 9, he was told his mother went away to a seaside resort. She had actually been placed in a mental institution, where she would remain for years, and he was never told about it (he never saw his mother again until he was in his late 20s). He left school at 14, lying about his age and forging his father's signature on a letter to join Bob Pender's troupe of knockabout comedians. He learned pantomime as well as acrobatics as he toured with the Pender troupe in the English provinces, picked up a Cockney accent in the music halls in London, and then in July 1920 was one of the eight Pender boys selected to go to the US. Their show on Broadway, "Good Times", ran for 456 performances, giving Grant time to acclimatize. He would stay in America.