The Sueyoshi clan was involved in trading with Spain and Portugal, trading with foreign countries which had a shogunal license called Syuinjo, and operating Fushimi Ginza (an organization in charge of casting and appraising of silver), and served as a local governor of Tokugawa Bakufu during the Edo period.
南蛮貿易や朱印状貿易、伏見銀座の運営にかかわり、江戸時代は徳川幕府の代官職を務めるなどした。