Wikipedia:
The name Sancho is an Iberiann name of Basque origin (Santxo, Santzo, Santso, Antzo). The feminine form is Sancha and the common patronymic is Sánchez. The name is also a slang term for a male committing adultery and is used in this sense in the song Santeria by the American punk band Sublime.
Dukes of Gascony
Sancho ISancho IISancho IIISancho IVSancho VSancho VI
Counts of Castille
Sancho García
Kings of León and Castile
Sancho I (León)Sancho II (León and Castille)Sancho III (Castille)Sancho IV (León and Castille)
Kings of Portugal
Sancho I, o PovoadorSancho II, o Capelo
King of Majorca
Sancho
Other historical figures
Abd al-Rahman SanchueloSancho, Count of ProvenceSancho, Count of AstaracSanciolo d'AragonaSancho Manoel de VilhenaSancho GraciaJuan Bautista SanchoGerman philosopher Max Stirner is repeatedly referred to as 'Sancho' in The German Ideology by Karl Marx and Friedrich Engels, comparing Stirner's methodology to the 'wisdom' of Sancho Panza in Don Quixote.Sancho the Dog of Milwaukee, Wisconsin
Fictional
Sancho Panza
