1920 Federal Census, Glen Cove
Screenshot of the 1920 Federal census for Glen Cove, NY. "Aunt May", 60-year old May Pancoast is shown living in a house on The Place, but not at 7 The Place. Instead, she boards at the home of Englishman Arthur Sleigh and his wife, Mary Valentine Sleigh. I'm not at all certain of the relation. Sallie Pancoast's father, Dr. Seth, married two Osborn sisters, Sarah Saunders, and then Susan George ("Sue"). I see a Mary Pancoast (b.1870) as a daughter of Seth+Sue, but no May.