Lucius Cassius, consul killed by the Helvetii
Person
Gallic War 1.7 supplies the first indexed source portrait: “… Caesar, inasmuch as he kept in remembrance that Lucius Cassius, the consul, had been slain, and his army routed and made to pass under the yoke by the Helvetii, did not think that [their request] ought to be granted: nor was he of opinion that men of hostile disposition, if an opportunity of marching through the Province were given them, would abstain from …”
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Gallic War 1.7
Caesar
… Caesar, inasmuch as he kept in remembrance that Lucius Cassius, the consul, had been slain, and his army routed and made to pass under the yoke by the Helvetii, did not think that [their request] ought to be granted: nor was he of opinion that men of hostile disposition, if an opportunity of marching through the Province were given them, would abstain from outrage and mischief. …
Gallic War 1.12
Caesar
… This single canton having left their country, within the recollection of our fathers, had slain Lucius Cassius the consul, and had made his army pass under the yoke. …
Gallic War 1.13
Caesar
… The Helvetii, confused by his sudden arrival, when they found that he had effected in one day, what they, themselves had with the utmost difficulty accomplished in twenty namely, the crossing of the river, send embassadors to him; at the head of which embassy was Divico, who had been commander of the Helvetii, in the war against Cassius. …