West Haven in "Manuscript Tradition"
The alien from Faraday who called himself "Loquasto" took up residence in West Haven in the 1980s. He hid his longevity by pretending to be a series of descendants. In his various identities, Loquasto maintained a position at the Beinecke Rare Book and Manuscript Library after it obtained the Voynich Manuscript, a document Loquasto made containing information and reminisces of his home planet.
After a space probe confirmed that Faraday had humanoid life, Loquasto fled, setting fire to his home in West Haven.