Juan Núñez III de Lara

Juan Núñez III de Lara (b.1313 - d.Burgos,28 November 1350), Lord of Lara and Vizcaya, son of Ferdinand de la Cerda (1275–1322) and Juana Núñez de Lara the Little Dove. Despite belonging to the House de la Cerda and aspiring to the Castilian-Leonese throne during the reigns of Sancho IV of Castile, Ferdinand IV of Castile and Alfonso XI of Castile, he carried the family name of his mother which corresponded to the name of his lordship.

He was Lord consort of Biscay, by his marriage to Maria Diaz de Haro II, daughter of Don Juan de Haro the Eye. He was also Lord of Villafranca, Oropesa, Torrelobatón, Lerma, Paredes de Nava, Castroverde and Aguilar. Ensign of the King and Lord Steward of Alfonso XI of Castile. He was a great-grandson of Alfonso X the Wise, King of Castile and León, and Louis IX, King of France.

Son of Ferdinand de la Cerda (1275–1322) and Juana Núñez de Lara the Little Dove. As such, he embodied the claim of his paternal grandfather, the Infante Ferdinand de la Cerda eldest son of King Alfonso X the Wise, while being heir to both the Lara holdings of his namesake maternal grandfather, Juan Núñez de Lara "the Fat", and to the lordship of Viscaya coming from his maternal grandmother Teresa Díaz of Haro.