John Ringling, American entrepreneur; one of the founders of the Ringling Brothers Circus (d. 1936)
John Nicholas Ringling (May 31, 1866 – December 2, 1936) was an American entrepreneur who is the best known of the seven Ringling brothers, five of whom merged the Barnum & Bailey Circus with their own Ringling Bros World's Greatest Shows to create a virtual monopoly of traveling circuses and helped shape the modern circus. In addition to owning and managing many of the largest circuses in the United States, he was also a rancher, a real estate developer and art collector. He was inducted into the Florida Artists Hall of Fame in 1987.

1866May, 31
John Ringling
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Events on 1866
- 27Mar
Civil Rights Act of 1866
President Andrew Johnson vetoes the Civil Rights Act of 1866. His veto is overridden by Congress and the bill passes into law on April 9. - 2Jun
Battle of Ridgeway
The Fenians defeat Canadian forces at Ridgeway and Fort Erie, but the raids end soon after. - 20Jul
Battle of Lissa (1866)
Austro-Prussian War: Battle of Lissa: The Austrian Navy, led by Admiral Wilhelm von Tegetthoff, defeats the Italian Navy near the island of Vis in the Adriatic Sea. - 20Aug
Andrew Johnson
President Andrew Johnson formally declares the American Civil War over. - 19Oct
Mantua
Austria cedes Veneto and Mantua to France, which immediately awards them to Italy in exchange for the earlier Italian acquiescence to the French annexation of Savoy and Nice.