The Heart of Ezra Greer (1917)

Kind old butler Ezra Greer has scrimped and saved to send his daughter Mary to college. While at school, Mary meets and falls in love with wealthy student John Denbeigh, who proposes to her. Before marrying, however, John must win his guardian's consent; his guardian refuses, so John forsakes Mary, who is now pregnant. Ashamed to return to her father, Mary supports herself by sewing. Meanwhile, Ezra leaves his employer to look for his daughter; in his wandering he takes a job as John's butler, unaware that John is Mary's betrayer and the father of his grandchild. After the baby is born, Mary reads that John is involved with vamp Amy Le Vere and deposits the infant on his father's doorstep. Ezra cares for the child, and instills in John a sense of responsibility to find the infant's mother. Gradually, John reforms, forsakes the vamp, and discovers that the foundling is his own child. When John proposes to Mary, the family is happily reunited with the addition of Grandpa Ezra.