Newton Jasper Earp (October 7, 1837 – December 18, 1928) was the eldest child of Nicholas Porter Earp, patriarch of the famous Earp family. While he was the little-known half-brother of Old West lawmen Wyatt, Virgil, and Morgan Earp, Newton remained close to his father and half-siblings, residing in Iowa, Missouri, Kansas, California, Nevada and Arizona near other members of the Earp family.