Rosa and Josefa Blazek (January 20, 1878 - March 30, 1922) were pygopagus twins born in Bohemia. They shared tissue and cartilage and were joined at a thoracic vertebra which negated any possibility of separation. The began their professional career in Paris becoming famous in the 1890's as they toured Europe. They became quite skilled on the violin and stunned crowds with their enthusiastic duets. But, by the turn of the 20th century, their popularity quickly evaporated due to poor management and overexposure. Their obscurity was shattered in 1909 when Rosa claimed to be pregnant. She claimed she had only had intercourse once and she refused to name the father. Regardless of the paternity, a son, Franz, was born on April 16, 1910. He eventually joined the twins' traveling show as "The Son of Two Mothers" and with their newfound celebrity the three of them left Europe and appeared in the United States. The twins set their sights on vaudeville and established a base in Chicago but their dream of the American stage was cut short when Rosa fell ill with influenza. As Rosa recovered, Josepha became sick and her illness soon overcame her. Josepha died on March 30, 1922. Rosa followed her twelve minutes later.