Allen Island or Allen's Island is a 450 acres (180 ha) private island which is part of St. George, Knox County, Maine. In 1979, it was purchased by Betsy Wyeth, wife of painter Andrew Wyeth. The Island had lost its full-time residents when it was purchased by Wyeth and had become "a seasonal home for two fishing families living in decaying houses on the fringe of the fast-encroaching spruce forest".