Sancho

Sancho is an Iberian given name. Sancho stems from the Latin name Sanctius. The feminine form of the name is Sanchia, and the common patronymic is Sánchez and Sanches. Outside the Spanish-speaking world, the name is especially associated with the literary character Sancho Panza. Sancho is a common slang term in the Spanish speaking world for the other man in the relationship. As in a spouse or girlfriend who is being unfaithful with a Sancho. Sancha is the feminine equivalent.