The description of Mordake's condition is somewhat similar to those of Chang Tzu Ping (Reference:
https://www.youtube.com/watch?v=T5iu3oA7vc0) and Pasqual Pinon (Reference:
http://www.thehumanmarvels.com/pasqual-pinon-the-two-headed-mexican/). In the 1976 edition of The Book of Lists both Edward Mordake and Pasqual Pinon were featured as the "2 Very Special Cases" on a list of "10 People With Extra Limbs or Digits" .
The 1896 text Anomalies and Curiosities of Medicine mentions a version of the story, and Mordake has been featured in many texts, plays, and songs. Also Wes Bentley played Edward in three episodes of the TV show, American Horror Story: Freak Show. (Reference: http://www.imdb.com/title/tt1844624/?ref_=fn_al_tt_1)
As told in Anomalies and Curiosities of Medicine:
"One of the weirdest as well as most melancholy stories of human deformity is that of Edward Mordake, said to have been heir to one of the noblest peerages in England. He never claimed the title, however, and committed suicide in his twenty-third year. He lived in complete seclusion, refusing the visits even of the members of his own family. He was a young man of fine attainments, a profound scholar, and a musician of rare ability. His figure was remarkable for its grace, and his face — that is to say, his natural face — was that of an Antinous. But upon the back of his head was another face, that of a beautiful girl, 'lovely as a dream, hideous as a devil'. The female face was a mere mask, 'occupying only a small portion of the posterior part of the skull, yet exhibiting every sign of intelligence, of a malignant sort, however'. It would be seen to smile and sneer while Mordake was weeping. The eyes would follow the movements of the spectator, and the lips 'would gibber without ceasing'. No voice was audible, but Mordake avers that he was kept from his rest at night by the hateful whispers of his 'devil twin', as he called it, 'which never sleeps, but talks to me forever of such things as they only speak of in Hell. No imagination can conceive the dreadful temptations it sets before me. For some unforgiving wickedness of my forefathers I am knit to this fiend — for a fiend it surely is. I beg and beseech you to crush it out of human semblance, even if I die for it.' Such were the words of the hapless Mordake to Manvers and Treadwell, his physicians. In spite of careful watching, he managed to procure poison, whereof he died, leaving a letter requesting that the 'demon face' might be destroyed before his burial, 'lest it continues its dreadful whisperings in my grave.' At his own request he was interred in a waste place, without stone or legend to mark his grave."
A song entitled "Poor Edward" was written by Tom Waits and appeared on his 2002 album, Alice. (Reference: http://en.wikipedia.org/wiki/Alice_%28Tom_Waits_album%29)
Youtube video for the song:
Did you hear the news about Edward?
On the back of his head he had another face
Was it a woman's face or a young girl?
They said to remove it would kill him
So poor Edward was doomed
The face could laugh and cry
It was his devil twin
And at night she spoke to him
Things heard only in hell
But they were impossible to separate
Chained together for life
Finally the bell tolled his doom
He took a suite of rooms
And hung himself and her from the balcony irons
Some still believe he was freed from her
But I knew her too well
I say she drove him to suicide
And took poor Edward to hell
A more common form of diprosopus:
(Chris Chaos is a long time resident of South Jersey who once again resides in and writes from Gloucester City, New Jersey. He is a filmmaker, a business owner, writer, urban explorer and investigator of the odd and weird, a proud parent, happily taken and a connoisseur of hot wings. Chris can be reached at AxisVideo@aol.com)