Conjoined twins al'Abbas and Banu Ummaya ibn 'Abd Shams in the year 750 AH). The Muslim polymath Abū al-Rayhān al-Bīrūnī described conjoined twins in his book "Kitab-al-Saidana". The English twin sisters Mary and Eliza Chulkhurst, who were conjoined at the back (pygopagus), lived from 1100 to 1134 (or 1500 to 1534) and were perhaps the best-known early historical example of conjoined twins. Other early conjoined twins to attain notice were the "Scottish brothers", allegedly of the dicephalus type, essentially two heads sharing the same body (1460–1488, although the dates vary); the pygopagus Helen and Judith of Szőny, Hungary (1701–1723), who enjoyed a
The D'Ambrosio Twins The D'Ambrosio Twins Bianca D'Ambrosio and Chiara D'Ambrosio (born April 28, 2005), also known collectively as the D'Ambrosio Twins, are American child actresses and musicians. The twins made their acting debut playing Summer Newman on the soap opera "The Young and the Restless". At the age of 6, Bianca and Chiara began starring together and separately in TV, films, print, music, and video projects. The twins were born in Los Angeles, California. In 2008 at the age of 3, the twins were cast in the role of Summer Newman on the soap opera, "The Young and the Restless" on CBS.