Joseph Pratt Allyn (March 9, 1833 – May 24, 1869) was an American jurist and journalist who served as one of the original Associate Justices of the Supreme Court of Arizona Territory.
[2] In 1863, probably upon the recommendation of U.S. Secretary of the Navy Gideon Welles, Allyn was appointed Associate Justice of the newly created Arizona Territory by President Abraham Lincoln.
Shortly after his arrival he began traveling throughout the new territory and used the experiences of his journey and explorations to write a series of articles.
[2] Later that year when Chief Justice William F. Turner took a leave of absence, Allyn filled in for him at Prescott and used the opportunity to make the population of the capital aware of his capabilities.
[8] Allyn considered creating a newspaper in La Paz, and traveled to San Francisco, California, in 1866 to buy a printing press.