What is origen del apellido alvarez?

Alvarez is a Spanish surname that is derived from the personal name "Alvaro". The name "Alvaro" is of Germanic origin and means "all guard" or "elf guard". The surname Alvarez was first recorded in the Kingdom of León in northern Spain during the 13th century. It spread throughout Spain and Latin America during the colonial period and is now one of the most common surnames in the Spanish-speaking world. In the United States, it is the 28th most common surname, with a population of over 1 million people. Notable individuals with the surname Alvarez include Mexican boxer Saul "Canelo" Alvarez, Spanish-American astronaut Jose Hernandez, and Spanish footballer Xabi Alonso.