Alonso Verdugo de Castilla (3 September 1706 in Alcala la Real, province of Jaen – 27 March 1767 in Turin, Italy) was a Spanish count, diplomat and poet.

He was the son of Pedro Verdugo, 2nd Count of Torrepalma, a Knight of the Order of Alcantara from Seville, and Isabel de Castilla y Lasso de Castilla, (1672-1737), from Granada, who descended from an illegitimate child King Pedro I of Castile (1334–1369).

From 1740 to 1767, he was a member of the Real Academia Española,[1] and the Real Academia de la Historia, a plenipotentiary minister for Spain in Vienna from 1755 to 1760 and from 1760 to 1767 in Torino, Italy, then the capital of the Duchy of Savoy.

He married in april 1753 María Francisca Dávila y Carrillo de Albornoz, granddaughter of the Duke of Montemar.

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