Which preposition to use with locrians

on Occurrences 1%

At the command of Hannibal, peace was concluded with the Locrians on these terms: that "they should live free under their own laws; that the city should be open to the Carthaginians, the harbour in the power of the Locrians.

to Occurrences 1%

The general himself, having posted himself upon an eminence which commanded a view of the country and the city, ordered a cohort of Bruttians to approach the walls, call out the leaders of the Locrians to a conference, and promising them the friendship of Hannibal, exhort them to deliver up the city.

Which preposition to use with  locrians