Namesakes
Sixto Durán Ballén
(m) 1921-2016 
Other Leaders 1992-1996 Ecuador (president)
Carlos of Bourbon-Parma
(a.k.a. Sixto) (m) 1970-
Other Royalty 1996- Netherlands (prince)
Sixto Brillantes
(m) 1939-2020
Other Notables law