Douglas Langford of St. Pius X-St. Matthias is a native of Belize and committed to Harvard, where his parents, Douglas Sr. and Terri, came on a visit. Douglas Langford Jr., a 6-foot-7 senior who came to the United States as a 14-year-old and enrolled at St. Pius X-St. Matthias in Downey, announced earlier this week he had accepted the admission …