Ben Affleck tried to sell his sprawling Greek Revival “imitation” plantation — the site of his elaborate wedding to Jennifer Lopez Saturday — three years after revelations surfaced that one of his ancestors was a slave-owning Georgia sheriff. In 2015, the Hollywood actor tried to suppress details about Benjamin Cole, a relative on his mother’s side who owned several slaves in Chatham County, near his 87-acre Hampton Island property. Affleck purchased the property in 2003, according to reports. The revelations about Cole were made on PBS’s “Finding Your Roots” hosted by Harvard University professor Henry Louis Gates Jr. Affleck put...