My father married my mom, Vera Becker. She was born on May 22, 1949. She has a sister, Helena Becker. My parents divorced 7 years later. A few years after that, my dad got married again, with another woman, from another family (not related with ours, we are catholics, they are luterans) who was born in a different town: Helena Becker. She was born on... May 22, 1949! And she has a sister called Vera Becker! What are the odds?