A Galatian's head as depicted on a gold Thracian objet d'art, 3rd C. BCE

"The disastrous termination of the Syrian war involved Gallo-Graecia also. Whether its inhabitants had really been among the auxiliaries of King Antiochus, or whether Manlius Vulso, in his eagerness for a triumph, had pretended that they were so, is uncertain. In any case, though he was victorious, he was refused a triumph, because the Romans did not approve of the pretext under which he had gone to war. The race of the Gallo-Greeks, as their very name implies, was of mixed and confused origin; they were the remnants of those Gauls who had laid Greece waste under the leadership of Brennus, and then, taking an easterly direction, settled in the middle of Asia. And so, just as seeds of cereal degenerate in a different soil, so their natural ferocity was softened by the mild climate of Asia. They were, therefore, routed and put to flight in two engagements, although, at the approach of the enemy, they had left their homes and retired to the highest mountains. The Tolostobogi had occupied Olympus, the Tectosagi Magaba. Dislodged from both these places by slings and arrows, they surrendered under a promise of perpetual peace. Some of them, however, after they had been bound, caused astonishment by trying to sever their bonds by biting them with their teeth and offering their throats to one another to be strangled. The wife of their king Orgiacon, who had suffered violation at the hands of a centurion, achieved the remarkable exploit of escaping from custody and carrying to her husband the head of her licentious foe which she had cut off."

-Lucius Annaeus Florus, Epitome  1.28.11

A Galatian's head as depicted on a gold Thracian objet d'art, 3rd century BC. Current location: Istanbul Archaeology Museum.

Source:

https://br.wikipedia.org/wiki/Restr:Galatian_head_Thrace_detail.jpg

 

Quote:

http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Florus/Epitome/1H*.html#XXVII