Which preposition to use with cotys

in Occurrences 1%

Cotys Cotys in Thrace, who was difficult to be reached and might conveniently be used against Eumenes, obtained pardon and received back his captive son.

on Occurrences 1%

His mother, however, opposed him and since she could not win him over by persuasion, determined to take to flight: he then became anxious to conceal his project, and so, while himself continuing preparations, he sent his brother Cotys on an embassy to convey a friendly message to Claudius.

with Occurrences 1%

Cotys with the Thracian horse had defeated and broken the Italian, and Perseus with his Macedonian horse the Greek, cavalry; the Romans had 2000 foot and 200 horsemen killed, and 600 horsemen made prisoners, and had to deem themselves fortunate in being allowed to cross the Peneius without hindrance.

Which preposition to use with  cotys