Which preposition to use with sassacus

in Occurrences 3%

The news of the war between the English and his old friends, the Pequodees, soon reached him; and, in an incredibly short time, he arrived in their country, and joined Sassacus in his fortified village.

as Occurrences 1%

The Narragansetts were the only tribe that could at all compete in strength with the fierce and haughty Pequodees; and their young Chieftain, Miantonomo, was already regarded by Sassacus as a dangerous rival.

Which preposition to use with  sassacus