[1] He was born in 1889 as the youngest of nine children to Francisco Antonio Barandiaran and María Antonia Ayerbe in the family baserri Perune-Zarre in Ataun.

In 1916 he joined the Faculty of Philosophy of the Vitoria Seminary as a science professor, teaching the subjects of Physics and Chemistry, Geology, Human Paleontology, Prehistory and History of Religions.

This offered him the position of correspondent for Spain and invited him to participate in the International Week of Religious Ethnology that was going to be celebrated in the Dutch town of Tilburg in 1922.

[2] In 1953 he returned from exile and opened at the University of Salamanca, at the request of its rector, Don Antonio Tovar, the Larramendi Chair with a course on the current state of Basque studies.

[4] Its complete collection consists of 211 numbers and is the most important and irreplaceable corpus of data reflecting the mental universe of traditional Basque populations during the past 20th century.