reunion (n.) Look up reunion at Dictionary.com
c.1600, from re- "back, again" + union. Cf. French réunion (1540s). The island of Reunion, formerly known as Bourbon, was renamed during the French Revolution (1793) in commemoration of the 1792 union of revolutionaries from Marseille with the National Guard in Paris, renamed back to Bourbon after 1815, then back to the current name after 1848.