For Gazquez there are 182 on Yasni with different names.
Among the most common last names on Yasni Gazquez is on position 4345.
Because all Castilian surnames ending in "ez" meaning is "son of", alluding to the origin of the family of the named instance, is the son of Fernando Fernandez, Pere Perez's son (Peter), son of Sancho Sanchez, Vazquez is the son of Basque, is the son of Rodrigo Rodriguez etc, etc and so Gázquez is "Son of Gasco"