The 1790 Census for Wells provided a count of 1 under "All other persons except Indians not taxed" in the household of Nicholas West. This may have been a formerly enslaved person.

"Although most African Americans did not own property, Cato McIntire, late of York, now of Wells, had purchased 30 acres of land from Nicholas West in 1788. West had married Kezia McIntire of York. The McIntires had freed other slaves/servants and undoubtedly had freed Cato as well." - Shelley, p. 154

Bibliography:

1790 US Census for Wells

My Name is Wells - by Hope M. Shelley (2002)