Boniface

A famous bearer of this name is Count Boniface de Castellane (1867-1932), a French nobleman and also his great grandfather, a Marshal of France: Boniface de Castellane (1788-1862). Count de Castellane was never called “Boniface”, he was called by his nickname “ Boni ”.
Boni de Castellane was a dandy and he's famous for the huge parties he organized in Monte Carlo (Monaco), Paris or Versailles. He was an art collector and a misleading husband, women used to call him: “The great lover”. American journalists loved to make caricatures of him and nicknamed him: “The King of Paris” or “The most elegant man in Europe”.

In the movie "Les Choristes," a character is named Boniface.

Boniface is the name of a character in the book "The Thief Lord" by German author Cornelia Funke. He goes by the nickname 'Bo'.

There is a part of a city named St. Boniface in Winnipeg, Manitoba, Canada.