Complex sentence: By 1595 some of the Timucuans living near the mission were fluent in Spanish and some were literate in a combination of Spanish, Latin, and a system of writing the Timucua language devised by Father Francisco Pareja of the nearby San Juan del Puetro mission.
Split into simpler sentences: By 1595 some of the Timucuans living near the mission were fluent in Spanish. Some had become literate in a combination of Spanish, Latin, and a system of writing the Timucua language devised by Father Francisco Pareja of the nearby San Juan del Puetro mission.