Cavallina storna (i.e. "Dappled Mare") is a 1953 Italian historical melodrama film directed by Giulio Morelli and starring Gino Cervi.
It is loosely based on several autobiographical poems ("La cavalla storna", "X agosto", "Un ricordo", and "II nido di Farlotti") by Giovanni Pascoli.
During the journey they get engaged, but the spell is interrupted by the revelation that the young man makes to the girl: he is the son of a captain accused of being responsible for the death of Ruggero Pascoli, Mariù's father.
Sandro continually searches for Mariù to try to understand the reason for his refusal, even his father remains vague and only Matilda, the girl's aunt, exasperated by his insistence, reveals to him that the family and the whole town consider Baroni the killer of Ruggero despite not having no evidence.
Sandro and Mariù meet again, while the girl cannot forget the suffering experienced by the family, the boy convinced of his father's innocence accuses her of having instilled in him the doubt right now that he is about to be recognized and acquire his surname.