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
Trigger Twins appears in The Multiversity Guidebook #1. The Trigger Twins are Justice Riders' members. In the second part of Arrowverse's "Elseworlds" crossover, John Deegan rewrites reality, turning Barry Allen and Oliver Queen into the Trigger Twins. Trigger Twins The Trigger Twins are the names of two sets of fictional Western themed comic book characters published by DC Comics. The Trigger Twins first appear in "All-Star Western" #58 (May 1951), the first issue of that title under its new name (previously known as "All Star Comics"), and was one of the features that replaced the previous stars, the Justice Society of America.