Question: When did American abolitionist, Kansas Territory Jayhawker, anti-slavery militant, and a friend of John Brown and Walt Whitman, member of The Immortal Ten, die?
Sentence (from "The Immortal Ten"): The group included George R. Hay, Silas Soule, Charles Doy, Capt. John E. Stuart [Stewart], S. J. Willis, Thomas Simmons, Joseph Gardner, Jacob Senix, Capt. Joshua A. Pike and Major James B. Abbott.
Relevant evidence: Yes