Strabo Geography 7.1.4

[4] These tribes have become known through their wars with the Romans, in which they would either yield and then later revolt again, or else quit their settlements; and they would have been better known if Augustus had allowed his generals to cross the Albis in pursuit of those who emigrated thither. But as a matter of fact he supposed that he could conduct the war in hand more successfully if he should hold off from those outside the Albis, who were living in peace, and should not incite them to make common cause with the others in their enmity against him. It was the Sugambri, who live near the Rhenus, that began the war, Melo being their leader; and from that time on different peoples at different times would cause a breach, first growing powerful and then being put down, and then revolting again, betraying both the hostages they had given and their pledges of good faith. In dealing with these peoples distrust has been a great advantage, whereas those who have been trusted have done the greatest harm, as, for instance, the Cherusci and their subjects, in whose country three Roman legions, with their general Quintilius Varus, were destroyed by ambush in violation of the treaty. But they all paid the penalty, and afforded the younger Germanicus a most brilliant triumph ¹ —that triumph in which their most famous men and women were led captive, I mean Segimuntus, son of Segestes and chieftain of the Cherusci,and his sister Thusnelda, the wife of Armenius, the man who at the time of the violation of the treaty against Quintilius Varus was commander-in-chief of the Cheruscan army and even to this day is keeping up the war, and Thusnelda’s three-year-old son Thumelicus; and also Sesithacus, the son of Segimerus and chieftain of the Cherusci, and Rhamis, his wife, and a daughter of Ucromirus chieftain of the Chatti, and Deudorix, ² a Sugambrian, the son of Baetorix the brother of Melo. But Segestes, the father-in-law of Armenius, who even from the outset had opposed ³ the purpose of Armenius, and, taking advantage of an opportune time, had deserted him, was present as a guest of honor at the triumph over his loved ones. And Libes too, a priest of the Chatti, marched in the procession, as also other captives from the plundered tribes—the Caülci, Campsani, Bructeri, Usipi, Cherusci, Chatti, Chattuarii, Landi, Tubattii. Now the Rhenus is about three thousand stadia distant from the Albis, if one had straight roads to travel on, but as it is one must go by a circuitous route, which winds through a marshy country and forests.