According to A. E. Hotchner, Hemingway supposedly considered divorcing fourth wife Mary Welsh. Hotchner reports in a new preface to Papa Hemingway, that Hemingway once told him: I wish I could leave her, I really do, but I'm too old now to afford a fourth divorce and the hell Mary would put me through.
Towards the end of his life, what Hemingway needed more than a live-in wife was a live-in nurse, and unfortunately for Mary, she had to fill this roll. And fill it she did. Hemingway biographer Jeffrey Meyers has noted that Mary could take an infinite amount of abuse. She was literally determined to be the final Mrs. Hemingway.