When Johanna “Jo” van Gogh married Theo van Gogh, she could never have predicted she would become the force that changed the course of art history. Within just two years, both her husband Theo and his brother Vincent were gone—one to illness, the other to despair. At just 28, Jo was left a widow with an infant son and a collection of paintings by a virtually unknown artist. Vincent van Gogh had sold almost nothing in his lifetime. Critics had dismissed his work, and the world saw little value in