Pedro I "the Cruel," King of Castile

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Pedro I "the Cruel," King of Castile, son of Alfonso XI, King of Castile and Leon and María of Portugal, was born at Burgos, Castile, 30 August 1334.1 He was slain by his illigitimate half brother, Enrique II Alfonso, King of Castile and León at Montiel, France, 23 March 1369.1

About 17 March 1346, Pedro was contracted to marry Joan, of the Tower, daughter of Edward III, King of England and Philippa Hainault, but she died of the plague at Bordeaux, France, while enroute to the ceremony;2 he married (1) Blanche of Bourbon, daughter of Pierre I, Duke of Bourbon and Isabelle of Valois, at Valladolid, Castile, 3 June 1353;2 clandestinely, he probably married (2) his long-time mistress, María de Padilla, daughter of Juan García de Padilla, señor of Villagera and María Gonzáles, in 1353;1,2 he married (3), as her 2nd husband, Juana de Castro, daughter of Pedro Fernández de Castro, señor of Lemos and Isabel de Leon, in March 1354.3

Richardson gives only the four children by María de Padilla. Wikipedia also identifies a child by Juana de Castro, and additional children by other mistresses:2,4
     Teresa de Ayala, whose ancestry is unknown (or not traced here),2
     Isabel de Sandoval, whose ancestry is unknown (or not traced here).2,4

For more information about Pedro I "the Cruel," King of Castile, please see this Wikipedia article.

Family 1

Teresa de Ayala
  • Maria de Ayala4

Family 2

Isabel de Sandoval
  • Juan Castilla4
  • Sancho de Castilla4 b. 1363, d. 1370
  • Diego de Castilla4 b. 1365, d. 1440

Family 3

Joan, of the Tower b. Feb 1335, d. 2 Sep 1348

Family 4

Blanche of Bourbon b. abt. 1335

Family 5

María de Padilla d. Jul 1361

Family 6

Juana de Castro d. 21 Aug 1374
  • Juan of Castile-León4 b. 1355, d. 1405
This person was last edited on26 Apr 2021


  1. [S1972] Neil D. Thompson and Charles M. Hansen, The Ancestry of Charles II, King of England: A Medieval Heritage [Twelve Generations] (Saline, Michigan: McNaughton & Gunn, 2012), #1974, further cited as Thompson and Hansen, The Ancestry of Charles II.
  2. [S1947] Douglas Richardson, Royal Ancestry: A Study in Colonial and Medieval Families (Five vols., Salt Lake City, Utah: s.p., 2013), 2:121 (Castile 12), further cited as Richardson, Royal Ancestry.
  3. [S1947] Richardson, Royal Ancestry, 2:122 (Castile 12).
  4. [S1323] Wikipedia Contributors, "Peter of Castile," Wikipedia, The Free Encyclopedia,[:WEB] (accessed Apr 2021).
  5. [S1947] Richardson, Royal Ancestry, 2:122 (Castile 12.i).