Whitman massacre

1847 murder of American missionaries by Cayuse Native Americans near Walla Walla, Washington

The Whitman massacre refers to the killing of American missionaries Marcus and Narcissa Whitman, along with eleven others, on November 29, 1847. They were killed by a small group of Cayuse men who accused Whitman of poisoning 200 Cayuse in his medical care during an outbreak of measles that included the Whitman household. The killings occurred at the Whitman Mission at the junction of the Walla Walla River and Mill Creek in what is now southeastern Washington near Walla Walla. The massacre became a decisive episode in the U.S. settlement of the Pacific Northwest, causing the United States Congress to take action declaring the territorial status of the Oregon Country. The Oregon Territory was established on August 14, 1848, to protect the white settlers.

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