Back to the Future S01 E14 Clara's Folks

"The time travelling adventures of Doc Brown, his family, and his friend, Marty McFly."

Marty, Jules and Verne head back to the 1850s, where they meet Jules and Verne's maternal grandparents, Daniel and Martha. Unfortunately, Martha falls in love with Marty instead of Daniel, and Clara is in danger of never existing. Things get worse when Martha is kidnapped by Wild Bill Tannen...