Satan's Sister is a 1925 British silent adventure film directed by George Pearson and starring Betty Balfour, Guy Phillips and Philip Stevens. It is an adaptation of the 1921 novel "Satan" by Henry De Vere Stacpoole. The novel was later adapted again as the 1965 film "The Truth About Spring".
George Pearson was born in 1905.
Nothing in the text mentions when he was born, so we don't know. It's difficult because the text does mention 1925 in the same sentence, so perhaps it thought this was his birth year.