Local historians have offered many variations of the origin of the City's name. Most agree that Kissimmee is a modern spelling of a tribal word. The book, Florida Indians and the Invasion from Europe by Jerald T. Milanich, links "Kissimmee" to a village of the Jororo, one of Florida's lesser-known tribes. Historian John Hann researched Spanish documents about missions established to convert the Jororo and other groups to Christianity in the late 1600s. Spanish records indicate that a mission was built near the tribe's main village, also called Jororo. Another mission was called Atissimi. Milanich writes, "Hann suggests that the name Atissimi, sometimes given as Jizimi and Tisimi, may be the source of the modern place name Kissimmee." A 1752 Spanish map used the name "Cacema," which has evolved into today's spelling of Kissimmee.