This was actor Spencer Tracy’s middle name. Spencer Bonaventure Tracy (1900-1967) was one of the first major stars of Hollywood's Golden Age. In 1999 the American Film Institute ranked him as the 9th greatest male actor of Classic Hollywood Cinema.
St. Bonaventure was a Franciscan monk who chronicled the life of St. Francis, the founder of his order. Also Bono could be a cool nickname, for any U2 fans out there...
This is the name of the titular character in the novel "The Silence of Bonaventure Arrow", by Rita Legansky. Bonaventure is a child gifted with incredibly sensitive hearing.