Gregorio Prieto Muñoz (2 May 1897 – 14 November 1992) was a Spanish painter associated with the Generation of '27.
He was born in Valdepeñas (where he later also died), the eighth son of Ildefonso Prieto (a cabinet-maker who seems to have studied architecture) and Froilana Muñoz (owner of a large shop in the town).
When he was two, his mother died and his father remarried to Tadea Solance, who Gregorio always loved like a birth-mother.
When he was four, he started drawing and then painting in watercolour, then when he was seven, the family moved to Madrid, where his father opened a cabinet shop.
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