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