Lamey Island Massacre
1636 CE.
Shown on the map at 22.340°, 120.372°.
The Lamey or Liuqiu Island Massacre was the slaughter of aboriginal inhabitants of Liuqiu Island (then known as "Lamey" or "Golden Lion Island") off the coast of Taiwan by Dutch soldiers in 1636. The killings were part of a punitive campaign in retaliation for the massacre of shipwrecked Dutch sailors in two separate incidents in 1622 and 1631 by natives of the island.
Text from the Wikipedia article Lamey Island Massacre, licensed CC BY-SA 4.0.