The famous German scientist and father of the theory of relativity, Albert Einstein, was two years older than his only sibling, his sister, Maria. Known to family and friends as Maja, she not only physically resembled him but as children they were best friends. They would always remain close—when, in 1939, because she was Jewish, she was forced to flee the Tuscan villa that her brother had so often visited, she sought refuge with him in America. She had to leave behind her husband, Paul Winteler, and their home at Quinto, near Sesto Fiorentino, where they had lived for nearly 17 years. She would never see either of them again.