The Woman in 47 (1916)

Viola Donizetti emigrates from Italy to the United States, running away from her father and the fiancé he has chosen for her, determined to rejoin Tony, her sweetheart. Unable to find Tony, however, Viola begins a relationship with the wealthy Collingswood, but leaves him when she discovers that he has a wife. Then, Viola finally locates Tony, with whom she makes plans to get married. Before the ceremony, they check into room 47, while Collingswood, obsessed with Viola, goes to the hotel and moves into room 48. He writes a suicide note citing his failed affair with Viola as the reason for his actions and then shoots himself. When Tony reads the note, he decides to leave Viola, but the priest who has been summoned to perform the ceremony persuades him to forget about the letter, and then, finally, Tony and Viola marry.