[4] His scholar production also intertwined with the theoretical problems of history and the methodology of research.

[4] Born on 24 July 1939 in Granada, Aróstegui studied at the Colegio Mayor Isabel la Católica, thanks to a scholarship.

[6] He earned a chair as professor of secondary education in a high school in Vitoria in 1967.

[2] He earned a PhD in History in 1970 by reading a dissertation titled El carlismo alavés y la guerra civil de 1870-1976, supervised by Vicente Palacio Atard [es].

[2] He worked for years attached to the Consejo Superior de Investigaciones Científicas (CSIC).