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Cuerno Verde (? - September 3, 1779) was a leader of the Comanche in the late 18th century.
Cuerno Verde, which translates to "Green Horn" in English, is the Spanish name given to Tabivo Naritgant because of the green tinted horns that he wore on his head-dress in battle. The English translation of the original Comanche name is "Dangerous Man". He inherited both his name and his distinctive head dress from his father, who was killed in combat against the Spanish at Ojo Caliente, in what is now New Mexico, in October 1768. 
The success of a series of raids led by the younger Tabivo Naritgant into Nuevo Mexico during the mid to late 1770s called him to the attention of the Spanish Viceroy in Mexico. The Viceroy offered Juan Bautista de Anza the governorship of Nuevo Mexico in exchange for him dealing with Tabivo Naritgant. De Anza moved to Nuevo Mexico and assumed the Governorship and for a year, studied past expeditions against and encounters with Cuerno Verde. A year later, in August 1779, de Anza led a mixed force of 500 to 800 Spanish troops and Ute, Apache, and Pueblo auxiliaries on a punitive expedition against the Comanche. 
The Comanche and Spanish forces met in a series of running battles between August 31 and September 3, 1779; Tabivo Naritgant was killed in combat, along with his first-born son and fifteen others, on September 3 somewhere between the present day cities of Pueblo, Colorado and Colorado City, Colorado, probably in a gully of the St. Charles River. Hostilities in the area decreased following his death.
The "green horn" headress of Cuerno Verde was taken from the battlefield and presented to the Viceroy by de Anza. The Viceroy in turn presented the headress to the King of Spain. The King, in turn presented the headress to the Pope. The headress remains on display at the Vatican museum in Rome.
Although Anza called him a "cruel scourge" and made note in his diaries of atrocities attributed to him, many modern Comanches question the veracity of Anza's statements and maintain that Tabivo Naritgant was only meeting the obligations of a responsible Comanche leader of the period.