Short answers, pulled from the story.
Origen died less than a year after 251 from injuries sustained during interrogation. He endured two years of imprisonment and torture under Emperor Decius before being released but dying at age sixty-nine.
No surviving writing by Origen mentions self-castration anywhere in his extensive corpus. Eusebius claimed decades later that Origen either performed the act or had it done to him, though some scholars dismiss this as deliberate fabrication.
The Hexapla contained six columns side by side comparing Hebrew text with Greek translations. It included original Hebrew, Hebrew transliterated into Greek characters, Septuagint, and three other Greek versions by Theodotion Aquila and Symmachus.
Emperor Justinian I condemned Origen heretic ordering all writings burned due to doctrines like preexistence of souls. The Second Council Constantinople in 553 may have anathematized him or only condemned certain heretical teachings derived from his ideas.
Origen fled to Caesarea Maritima where bishops Theoctistus and Alexander became devoted admirers. He took permanent residence there instead of returning to Alexandria after Bishop Demetrius declared his ordination invalid.