Correus

When a creditor will accept ſolutionem particularum vel correi, the debtor or the correus muſt pay

Source: wiktionary

Since this act, few take bonds with cautioners, but bind them all as correi and principals.

Source: wiktionary

CÆSAR thought he had done enough for the ſeaſon of the year, in diſperſing the enemy’s forces to prevent a war; but conſidering how much it imported him to take care that the rebels ſhould not be able to make any conſiderable head the next ſummer, left C. Trebonius, with two of the legions he brought along with him, at Orleans: and being informed by ſeveral meſſengers from Rheims, that the people of Beauvois (who are more renown’d for warlike virtue than any other ſtate of the Belgæ) with ſome of their neighbours, under the conduct of Correus of Beauvois, and Comius of Arras, were raiſing a conſiderable army, and marching to a general rendezvous, in order to invade the borders of Soiſſon, which belonged to the country of Rheims; he thought it did not only concern his honour, but intereſt, not to permit ſuch faithful allies as thoſe of Rheims to ſuffer, who had merited ſo well from the Roman empire.

Source: wiktionary