Who was the Egyptian that led the revolt of the Assassins in Acts 21? When Paul was arrested in Jerusalem he was mistaken for an anarchist Egyptian:


  Acts 21:37-38 ESV As Paul was about to be brought into the barracks, he said to the tribune, “May I say something to you?” And he said, “Do you know Greek? Are you not the Egyptian, then, who recently stirred up a revolt and led the four thousand men of the Assassins out into the wilderness?” Paul replied, “I am a Jew, from Tarsus in Cilicia, a citizen of no obscure city. I beg you, permit me to speak to the people.”


There is a snippet of info about what the Egyptian did here, but it's very little. Is there any more information about this Egyptian? Specifically his name, what he did, who the Assassins were, etc...?
Here is a summary of what I found on this subject :

The Greek word for “dagger men”, used in the the quoted verse, is derived from the Latin sicarii, which means “users of the sica,” or dagger. First-century historian Flavius Josephus describes the Sicarii as a band of fanatic Jewish patriots, unrelenting enemies of Rome, who engaged in organized political killings.

Josephus adds that the Sicarii later played a leading role in the Jewish revolt against Rome in 66-70 C.E. Thus, the Roman commander would be anxious to detain the supposed leader of such a group.

The “Egyptian” seditionist with whom the military commander at Jerusalem confused Paul is possibly the same one mentioned by Josephus. (The Jewish War, II, 254-263 [xiii, 3-5]) His insurrection is stated to have taken place during the reign of Nero and the procuratorship of Felix in Judea, circumstances fitting the account at Acts 21:37-39; 23:23, 24.