The name Sancho is of Spanish origin and the meaning of Sancho is 'holy'. This name is used in Spanish and Portuguese. The name finds its meaning in the Late Latin name Sanctius, which is derived from the Latin word 'sanctus', meaning 'saintly', 'holy'. The name also is a variant of the Iberian name Sanctius, meaning the same. Historically, this name was used in the ninth century and was the name of several Spanish and Portugese kings. The name gained popularity thanks to a character in the novel 'Don Quixote' by Miguel de Cervantes, who was the squire to the main protagonist, Don Quixote.