The Count of Plasencia is a Spanish nobility title, created in 1611 by King Philip III, in favor of Pedro Lanuza y Ximénez de Urrea.
The title was granted in memory of the ancient dominion that the Lanuza family had exercised in the 16th century on Plasencia de Jalón, until it was dispossessed of it by Philip II, when his brother Juan de Lanuza was beheaded, for having supported Antonio Pérez, his secretary, who had invoked the Fueros of Aragon, to avoid being tried for the murder in El Escorial of Escobedo (secretary of Don Juan de Austria).[1] Granted the Grandee of Spain on August 18, 1707.
The primitive county of Plasencia was extinguished in 1476, when the Catholic Monarchs elevated this county to a duchy with the same denomination, in favor of Álvaro de Zúñiga y Guzmán, in compensation for the loss of the Duchy of Arévalo, which reverted to the Crown.