My family tree stops somewhere back Hesse, Germany in the mid 1700s. The name isn't Ross though. It's Fockenroth.
 https://ancestors.familysearch.org/en/2C1S-M1Z/johannes-george-vockenroth-1753-1830

Then, in the early 1800s one Fockenroth family moved to Ohio and then about 10 years later moved back and changed their name to Ross. They had the same family member's names, same kids names, sexes, and just aged 10 years according to the census. It's odd.

My great grandmother said it was because they were horse thieves. But we're not sure if that's true or not 😂