Very little is known or recorded about John Calvin’s wife, Idelette de Bure. Yet, Thomas Smith records this of her in Calvin and His Enemies: A Memoir of the Life.
Externally, there was in this woman nothing very attractive. She was encumbered with several children of a first marriage; she had no fortune; she was dressed in mourning; her person was not particularly handsome. But for Calvin, she possessed the best of treasures, a living and tried faith, an upright conscience, and lovely as well as strong virtues. As he afterwards said of her, she would have had the courage to bear with him exile, poverty, death itself, in attestation of the truth. Such were the noble qualities which won the Reformer.
Thomas Smyth, Calvin and His Enemies: A Memoir of the Life, Character, and Principles of Calvin. (Bellingham, WA: Logos Research Systems, Inc., 2009), 171.