[10] La Puebla de Arganzón and the adjacent municipality of Condado de Treviño together constitute the enclave of Treviño, part of the territory of Burgos, surrounded by the Basque province of Álava.

[12] There was older settlement named Arganzón, about a kilometre away from the present La Puebla.

[13] The present Puebla de Arganzón was founded toward the end of the 12th century, at a time of border wars between the kingdoms of Castile and Navarre.

[7] A large part of medieval La Puebla de Arganzón, a boat-shaped area that stretches from north to south, survives today, although new development has increased the size and population in recent years.

[7] The fictional liberal crusader Salvador Monsalud, hero of the ten books of the second series of Benito Pérez Galdós's Episodios Nacionales (written 1875–1879) was a native of La Puebla de Arganzón.