The Wild Strain (1918)

Although the prominent Hollywood family prides itself on its illustrious family tree, young Winifred Hollywood exhibits a fondness for wild adventures that greatly disturbs her parents. When Winifred becomes engaged to bank official Harold Burton, his equally snobbish parents visit the Hollywood home and are shocked by the young woman's spirited outbursts and mischievous tricks, and the engagement is broken after she decides to perform bareback feats with a traveling circus.