Douglas Harper's Etymology Dictionary
late 14c., past participle adjective from shit (v.). From 1540s in transferred sense of "very unpleasant."
Wiktionary
(context archaic English) Of or pertaining to excrement. alt. (context obsolete English) (past participle of shit English) v
(context obsolete English) (past participle of shit English)
Usage examples of "shitten".
Yod Crewsy did a crazy drunken dance, feet uplifted as if walking through a shitten byre.
And shame it is, if that a priest take keep, To see a shitten shepherd and clean sheep: Well ought a priest ensample for to give, By his own cleanness, how his sheep should live.
In effetti, il rumore, la confusione, la puzza e le canzoni dal viale là in fondo (allora noto come Shitten Alley, il viale merdoso) erano diventati leggendari a quel tempo.