Ezekiel (sources)
Survey of ancient sources on Ezekiel.
Josephus, Antiquities
Ant X 5,1 -- nor was he [i.e. Jeremiah] the only prophet who delivered such predictions beforehand to the multitude, but so did Ezekiel also, who was the first person that wrote, and left behind him in writing two books concerning these events. Now these two prophets were priests by birth, but of them Jeremiah dwelt in Jerusalem, from the thirteenth year of the reign of Josiah, until the city and temple were utterly destroyed.
Ant X 6,3 -- Among [the first wave of deportees]] was the prophet Ezekiel, who was then but young...
Ant X 7,2 -- Ezekiel also foretold in Babylon what calamities were coming upon the people, which when he heard, he sent accounts of them unto Jerusalem. But Zedekiah did not believe their prophecies, for the reason following: It happened that the two prophets agreed with one another in what they said as in all other things, that the city should be taken, and Zedekiah himself should be taken captive; but Ezekiel disagreed with him, and said that Zedekiah should not see Babylon, while Jeremiah said to him, that the king of Babylon should carry him away thither in bonds.
Ant X 8,2 -- ...these things happened to him [i.e. Zedekiah], as Jeremiah and Ezekiel had foretold to him, that he should be caught, and brought before the king of Babylon, and should speak to him face to face, and should see his eyes with his own eyes; and thus far did Jeremiah prophesy. But he was also made blind, and brought to Babylon, but did not see it, according to the prediction of Ezekiel.