What is "azpilicueta"

Azpilicueta is a Spanish surname. Notable people with this surname include the following:

• César Azpilicueta (born 1989), Spanish footballer, currently playing for Chelsea
• Francis Xavier (1506–1552), born Francisco de Jasso y Azpilicueta, Roman Catholic missionary
• Martín de Azpilcueta (1491–1586), Spanish canonist, theologian and economist