Clarence
来自Big Physics
wiktionary
Named after Prince William, Duke of Clarence and St Andrews, later to become William IV of the United Kingdom.
etymonline
Clarence
surname, from Medieval Latin Clarencia, name of dukedom created 1362 for Lionel, third son of Edward III, so called from the town of Clare, Suffolk, whose heiress Lionel married. Used as a masc. proper name from late 19c. As a type of four-wheeled closed carriage, named for the Duke of Clarence, later William IV.