Which Character is taken from the novel 'The Sun Also Rises'?

The Sun Also Rises, first major novel by Ernest Hemingway, published in 1926.
Titled Fiesta in England, the novel captures the moods, feelings, and attitudes of a hard-drinking, fast-living group of disillusioned expatriates in postwar France and Spain.
Important Character:
- Rober Cohn,
- Pedro Romaro,
- Jake Barnes,
- Lady Brett

Source: britannica.com