All of a Sudden Peggy (1920)

Lord Anthony Crackenthorpe engages the help of a zoologist's widow to help him write a book about his favorite subject, spiders. She moves into his mansion with her impetuous daughter Peggy ( Marguerite Clark ). Anthony's mother is very worried that her son, heir to the Crackenthorpe estate may become involved with Peggy. She asks her younger son Jimmy ( Jack Mulhall ) to keep company with the young girl. However, Anthony has already fallen in love with Peggy's mother and the girl learns her mother has turned down his marriage proposal, insisting she will not marry until her daughter has wed. Upon hearing this, Peggy leaves a note claiming she has married Jimmy and sneaks herself into his home while he is gone. Jimmy's mother is livid and fears her son may be ruined by scandal. Now the always impulsive Peggy suddenly decides she really does love Jimmy and they now must marry immediately.