Eyzaguirre
Eyzaguirre is a surname of Basque origin. Spelling variants include Eizaguirre, attested specially in Spain, or Eizagirre, modern Basque spelling. Other historically attested forms (as cited by Luis Michelena) are "Aizaguirre" (Gipuzkoa, 1782), "Aiçaguer", "Aizagerri" (placename in Pamplona, 1574).