John F. Kennedy | Pope John Paul II | Elton John | John | Ludwig van Beethoven | John Lennon | John Wayne | John McCain | John Kerry | John Cage | Vincent van Gogh | Olivia Newton-John | John Williams | John Peel | John Adams | John Steinbeck | John Travolta | John Milton | John Zorn | Van Morrison | John Marshall | John Howard | John Singer Sargent | John Ruskin | John Updike | John Maynard Keynes | John Coltrane | John Cleese | Van Halen | St. John's |
In 1931 Mangin, partnering with compatriot Berkeley Bell, were runners-up in the doubles final of the U.S. National Championships, played in Brookline, MA, losing in straight sets to compatriots John Van Ryn and Wilmer Allison.