The son of sculptor Lorenzo Coullaut-Valera, he was born in Madrid.
He continued the work begun by his father in the Plaza de España.
A statue of Charles III of Spain by Coullaut-Valera stands in Olvera Street, Los Angeles.
[1] Archived 2022-09-04 at the Wayback Machine Coullaut-Valera was Luis Sanguino's teacher.
Sanguino had asked sculptor Mariano Benlliure to be his teacher, but Benlliure thought that his advancing age would make him a bad choice, and instead recommended that Sanguino seek out Coullaut-Valera.