On the 1618 voyage, the crew visited and partly mapped a river which was named Willems Rivier.
This river was most likely named after the Commander of the ship Mauritius, Supercargo, Willem Janszoon.

The chart shows Willems revier, besocht by 't volck van 't Schip Mauritius in Iulius A° 1618 ("Willem's River, visited by the crew of the ship Mauritius in July 1618").
On the 1618 voyage, the crew visited and partly mapped a river which was named Willems Rivier. This river was most likely named after the Commander of the ship Mauritius, Supercargo, Willem Janszoon.
The chart shows Willems revier, besocht by 't volck van 't Schip Mauritius in Iulius A° 1618 ("Willem's River, visited by the crew of the ship Mauritius in July 1618").
Mauritius (1612)