Who was Hemingway's third wife?

Hemingway's third wife was Martha Gellhorn. They married in 1940 and divorced in 1945, making Gellhorn the third of Hemingway's four wives.

Gellhorn was not primarily known as a novelist's spouse. She was an accomplished American journalist, novelist, and war correspondent who reported from major conflicts around the world. She met Hemingway in Key West in 1936, and they later traveled together during the Spanish Civil War. Their shared interest in war reporting and international affairs helped draw them together.

During World War II, Gellhorn covered events across Europe and was among the journalists who reached Normandy on D-Day in June 1944. Her career was demanding and independent, and prolonged tensions developed in the marriage as both she and Hemingway pursued war reporting. She later became especially known for resisting portrayals of her life as merely an episode in Hemingway's biography.

The most common mix-up is with Mary Welsh, Hemingway's fourth and final wife. Pauline Pfeiffer was his second wife, while Hadley Richardson was his first. Gellhorn's marriage to Hemingway lasted five years, from 1940 until their divorce in 1945.