author
1780–1842
A Spanish Franciscan missionary and linguist, he is remembered for his long service at Mission San Juan Bautista and for documenting Native languages in early California. His work on Mutsun makes him a notable figure in the linguistic history of Alta California.

by Felipe Arroyo de la Cuesta
Born in Cubo de Bureba, Burgos, Spain, in 1780, Felipe Arroyo de la Cuesta became a Franciscan friar and later traveled to Alta California. He arrived in 1808 and spent many years at Mission San Juan Bautista, where he served during a formative period in the mission's history.
He is best known today for his work as a linguist. Sources describe him as especially important for recording Native languages, including Mutsun, and his notes and grammatical work have made him a lasting reference point for scholars of California's Indigenous language history.
Available sources agree on his importance as a missionary and language documentarian, though some biographical details vary across records. I could not confirm a suitable portrait image from reliable page images, so no profile photo is included.