Bloody Springs massacre
1757 CE.
Shown on the map at 40.846°, -76.293°.
The Bloody Springs massacre was an attack by Lenape warriors on homesteads in what is now Berks County, Pennsylvania, on October 1, 1757, during the French and Indian War. The Spatz family and other settlers were killed at a spring near modern-day Strausstown, Pennsylvania, causing the water to run red with the blood of the family. The story of the massacre has been passed down through the Degler family, whose farm was adjacent to the Spatz homestead.
Text from the Wikipedia article Bloody Springs massacre, licensed CC BY-SA 4.0.