Which preposition to use with gombroon

on Occurrences 1%

It is said that there is a banyan tree near Gombroon on the Persian gulf, computed to cover nearly 1,700 yards.

to Occurrences 1%

The ship was on its way from Gombroon to Surat, with a valuable cargo, of which the pirates had intelligence; and two squadrons were fitted out to waylay her.

Which preposition to use with  gombroon