 Cartographers of the Matsumae clan created a map of the island and called it "Kita-Ezo" (Northern Ezo, Ezo being the old name for the islands north of Honshu).The first European known to visit Sakhalin was Martin Gerritz de Vries, who mapped Cape Patience and Cape Aniva on the island's east coast in 1643.The Dutch captain, however, was unaware that it was an island, and 17th century maps usually showed these points (and often Hokkaido as well) as being part of the mainland.