Which preposition to use with quiros

in Occurrences 1%

It has since been ascertained they were then a little to the north of Pitcairn Island, afterwards the home of the mutineers of the Bounty; but Cook did not feel himself at liberty to make any deviation from his course "to look for what he was not sure to find," although he thought he was "not far from those islands discovered by Quiros in 1606.

Which preposition to use with  quiros