Etienne Provost was the son of Albert and Anne Prévost. He had 16 siblings. He married Marie Rose Salle dit Lajorie in 1829. Together they gave birth to their one daughter, Marie Provost.
Not much is known about his early life before he became one of the most famous Taos fur trappers. He was called the “Man of the Mountains” and knew his way around them. He helped guide and lead expeditions. He guided people