All for a Husband (1917)

Celeste Hardin wants to set up her brother Henry, a confirmed bachelor, with her college friend Henrietta Downs, believing that she wold be a good wife for him. Henry and Henrietta discover Celeste's scheme and decide to play a trick on her--Henrietta will pose as Myra Haynes, an escaped lunatic and pretend to be in love with Henry. However, the real Myra Haynes attends a political rally, at which Henry declares his intention to run for mayor, and she becomes convinced that he is her long-lost lover, also named Henry. Complications ensue.