Josephus Mentions both Judas of Galilee and Theudas
"Now it came to pass, while Fadius was procurator of Judea, that a certain magician, whose name was Theudas, persuaded a great part of the people to take their effects with them, and follow him to the river Jordan; for he told them he was a prophet and that he would, by his own command, divide the river, and afford them an easy passage over it; and many were deluded by his words. Fadius slew many of them and also took Theudas alive, and cut off his head, and carried it to Jerusalem."

Josephus - Antiquities of the Jews - Book 20 Chapter 5:1

Acts 5:36 For before these days rose up Theudas, boasting himself to be somebody; to whom a number of men, about four hundred, joined themselves: who was slain; and all, as many as obeyed him, were scattered, and brought to nought.

Judas of Galilee, Cyrenius and the Taxing
"The Sons of Judas of Galilee were now slain; I mean of that Judas who caused the people to revolt, when Cyrenius came to take an account of the estates of the Jews."
Josephus - Antiquities of the Jews - Book 20 Chapter 5:2

Acts 5:37 After this man rose up Judas of Galilee in the days of the taxing, and drew away much people after him: he also perished; and all, even as many as obeyed him, were dispersed.

"But the fourth sect of Jewish philosophy, Judas the Galilean was the author"
Josephus - Antiquities of the Jews - Book 18 Chapter 1:6

Cyrenius is Governor of Syria During the Census -Taxing
"So Archelaus's country was laid to the province of Syria; and Cyrenius, one that had been consul, was sent by Caesar to take account of people's effects in Syria.Cyrenius came himself into Judea, which was now added to the province of Syria, to take an account of their substance."
Josephus - Antiquities of the Jews - Book 18

"That had been consul" - This lends credibility to the fact of Cyrenius possibly ruling as governor of Syria on more than one occasion.

Luke 2:1 And it came to pass in those days, that there went out a decree from Caesar Augustus, that all the world should be taxed. And this taxing was first made when Cyrenius was governor of Syria.