According to http://www.denverpost.com/news/ci_10240376, Point 13,087 just southwest of Grand Turk near Silverton has been named Spencer Peak. It's unranked, with a rise of 267 feet above the 12,820-foot saddle with Grand Turk. Many people who have climbed Grand Turk have probably climbed it - Teresa and I went over it on 10/9/04 on our way to Grand Turk.
John - looks like this needs to be added as an unranked thirteener to the list!