Timucua is a language isolate formerly spoken in northern and central Florida and southern Georgia by the Timucua peoples. Timucua was the primary language used in the area at the time of Spanish colonization in Florida. Differences among the nine or ten Timucua dialects were slight, and appeared to serve mostly to delineate band or tribal boundaries. Some linguists suggest that the Tawasa of what is now northern Alabama may have spoken Timucua, but this is disputed. Most of what is known of the language comes from the works of Francisco Pareja, a Franciscan missionary who came to St. Augustine in 1595. During his 31 years living with the Timucua, he developed a writing system for the language. From 1612 to 1628, he published several Spanish–Timucua catechisms, as well as a grammar of the Timucua language. Including his seven surviving works, only ten primary sources of information about the Timucua language survive, including two catechisms written in Timucua and Spanish by Gregorio de Movilla in 1635, and a Spanish-translated Timucuan letter to the Spanish Crown dated 1688. In 1763 the British took over Florida from Spain following the Seven Years' War, in exchange for ceding Cuba to them. Most Spanish colonists and mission Indians, including the few remaining Timucua speakers, left for Cuba, near Havana. The language group is now extinct. Linguistic relations Timucua is an isolate, not demonstrably related genetically to any of the languages spoken in North America, nor does it show evidence of large amounts of lexical borrowings from them. The primary published hypotheses for relationships are with the Muskogean languages (Swanton (1929), Crawford (1988), and Broadwell (2015), and with various South American families (including Cariban, Arawakan, Chibchan languages, and Warao) Granberry (1993). These hypotheses have not been widely accepted. Dialects Father Pareja named nine or ten dialects, each spoken by one or more tribes in northeast Florida and southeast Georgia: Timucua proper – Northern Utina tribe, between the lower (northern) St. Johns River and the Suwannee River, north of the Santa Fe River in Florida and into southern Georgia. Potano – Potano and possibly the Yustaga and Ocale tribes, between the Aucilla River and the Suwannee River in Florida and extending into southern Georgia, but not along the coast of the Gulf of Mexico (with the possible exception of the mouth of the Suwannee River), between the Suwannee River and the Oklawaha River south of the