Which preposition to use with shipowner

in Occurrences 3%

It happened that the principal merchant and shipowner in the town, Mr. Singleton by name, was an intimate friend and old school-fellow of Captain Ellice, so Fred went boldly to him and proposed that a vessel should be fitted out immediately, and sent off to search for his father's brig.

of Occurrences 2%

Mr. Simeon Brown was a thriving shipowner of Newport, who lived in a large house, owned several negro-servants and a span of horses, and affected some state and style in his worldly appearance.

for Occurrences 1%

*** At a flower-day sale at Grimsby one thousand pounds was paid by a local shipowner for a blue periwinkle.

Which preposition to use with  shipowner