Clara Wilson's timeline is dependent on the following:
- Clara Clayton doesn't fall into the ravine, and the ravine is renamed Eastwood Ravine
- Biff behaving like a jerk as usual (and not receiving the almanac) to eventually opening his auto detailing business
- Marty Jr refusing Griff's offer so that the gang is jailed.
Behind the scenes
As the card game in which this person appears deals with a series of alternate universes, this character cannot be considered film canon.