The Viscountcy takes its name from the town of Azpa, a locality and council located in the municipality of Valle de Egüés, in Navarre province, Spain.

[1] The Viscounts of Azpa, who were descendants of Queen Joan II of Navarre and King Philip III of Évreux,[2] were later granted the title Marquess of Fontellas.

[3][4][5] On November 11, 1980, the Undersecretary's office issued a resolution announcing that José Vélaz de Medrano y Echevarría had applied for the succession to the title of Viscount of Azpa.

Azpa holds significant historical interest and boasts an ancient lordship attached to the Medrano family, with remnants of its noble past still visible.

The town is home to the palace of the Viscount of Azpa who were also Marquesses of Fontellas, a noble family noted for Jaime Vélaz de Medrano y Echauz' leading role in the historic battle of Amaiur-Maya in 1522.

[12] A table of genealogy exists for the Viscounts of Azpa, tracing back to Joan II of Navarre and Philip III of Évreux.

The owners of Mendillorri enjoyed the privilege of sitting in the Kingdom's Cortes and were summoned during the time of the viceroys, the Count of Miranda and the Marquess of Almazán.

José Joaquín Vélaz de Medrano was granted the title of Marquis of Fontellas by Charles IV in 1793, though he had to pay 843,000 reales for the rights and processing fees.

In a ceremonial display of power, he took his place in the palace’s main hall, seated on a high-backed chair and holding the royal staff.

Remaining at his tribunal for an extended period, he publicly administered justice without opposition, solidifying his position as the legal authority over the domain.

[2] Together, they had two children: José Velaz de Medrano y Navarra held several prestigious titles, including IV Viscount of Azpa and Lord of Autol and Mendillorri.

[24] José Vélaz de Medrano, Viscount of Azpa, Lord of Autol, was noted for his claim against the Deputation of the Kingdom, regarding payment of 508 ducats for the expenses of a trip to Madrid.

[28] On 29 October 1749, Don Joaquin Velaz de Medrano, Viscount of Azpa and lord of the town of Autol, residing in the city of Pamplona, outlined the legitimacy of his claim in the lawsuit under review by the council.

[28] On November 11, 1980, the Undersecretary's office issued a resolution announcing that José Velaz de Medrano y Echevarría had applied for the succession to the title of Viscount of Azpa.