Spanish is spelled absolutely phonetically. However, both names are Aguirre y Aranzabal are Basque. So their correct pronunciation would be would be:

Aguirre = "A-ger-ray" (hard "g")
https://www.google.com/search?sxsrf=APwXEdeLmnFI9YVzOBKEjRBtwMYznW2w3w:1687472954103&q=pronounce+basque+name+aguirre&tbm=vid&sa=X&ved=2ahUKEwiY7fzP9tf_AhX7FVkFHY1TB6YQ0pQJegQICRAB&biw=1070&bih=599&dpr=2.61#fpstate=ive&vld=cid:d1fcd67f,vid:ey0pKAgAOVw

Aguirre = in Spanish it would be "A-gear-ray"


Aranzabal = "A-ran-tha-bal". Basque name "z" is pronounced as "th" - see pro golfer Olazábal