Infante don Alfonso VII “el Emperador” DE CASTILLA y León
Afonso I “the Conqueror” DE PORTUGAL
Mathilde DE SAVOIE
Infante don Fernando II DE CASTILLA y León
Infanta dona Urraca DE PORTUGAL
(Abt 1151-1188)

Infante don Alfonso IX DE CASTILLA y León


Family Links

1. Infanta dona Tereza DE PORTUGAL

  • Infanta doña Sancha DE LEÓN
  • Infante don Fernando DE LEÓN
  • Infanta doña Dulce DE LEÓN, Señora de Valdeorras
2. Infanta doña Berenguela DE CASTILLA
0. Unnamed Mistress
  • Pedro ALFONSO, Maestre de Santiago
0. Inés Iñíguez DE MENDOZA, Mistress
  • Urraca Alfonso DE LEÓN
0. Aldonza Martínez DE SILVA, Mistress
  • Rodrigo ALFONSO, Señor de Aliger y Castro del Río
  • Aldonza Alfonso DE LEÓN
  • Teresa Alfonso DE LEÓN
0. Estefanía PÉREZ, Mistress
  • Fernando ALFONSO (d.y.)
0. Maura, Mistress
  • Fernando ALFONSO, Dean of Santiago, Archdean of Salamanca
0. Teresa Gil DE SOVEROSA, Mistress
  • Sancha Alfonso DE LEÓN
  • María Alfonso DE LEÓN
  • Martín Alfonso DE LEÓN, Knight of the Order of Santiago
  • Urraca DE LEÓN

Infante don Alfonso IX DE CASTILLA y León

  • Born: 15 Aug 1171, Zamora, León, Spain
  • Married (1): 15 Feb 1191, Guimarães, Braga, Portugal
  • Married (2): Dec 1197, Valladolid, Spain
  • Died: 24 Sep 1230, Villanueva de Sarria, Galacia, Spain

  Also known as Alfonso IX DE LEÓN, King of León, Galicia and Castile.

  General Notes:

Compiler's 22/23/24/25 x great-grandfather

  Research Notes:

The Chronicon Conimbricensi records the birth “mense Februario…in die Ascensionis Domini” (presumably an error) in 1171 of “Rex Alfonsus filius Regis Fernandi et Dñæ Orace Reginæ”. The Chronicle of Alberic de Trois-Fontaines names "Aldefonsus rex Legionis" as son of "Fernando [frater regis Sanctii]".

He succeeded his father in 1188 as ALFONSO IX King of León and Galicia. He held the first documented Cortes in León in 1188, attended by duly elected representatives of towns as well as nobles and ecclesiasts. The Pope excommunicated him because of his first marriage, between cousins without papal dispensation, and placed León under an interdict until Alfonso agreed to a separation. Another dispute broke out with the church after he married his second wife, also his first cousin, from whom he was also obliged to separate.

He succeeded in 1217 as ALFONSO IX King of Castile, by right of his second wife and son. He successfully campaigned against the Moors, capturing Lazeres, Merida, Elvas, Badajoz and several towns in Extremadura in 1228.

The Anales Toledanos record the death in 1230 “en Villanneva de Saria” of “el Rey Don Alfonso de Leon, Padre del Rey D. Fernando”. 1

  Marriage Information:

Alfonso married Infanta dona Tereza DE PORTUGAL, daughter of Infante dom Sancho I “o Poblador” DE PORTUGAL and Infanta doña Dulcia DE ARAGÓN, on 15 Feb 1191 in Guimarães, Braga, Portugal. (Tereza DE PORTUGAL was born about 1176 and died on 17 Jun 1250 in Lorvano, Spain.)

  Marriage Information:

Alfonso also married Infanta doña Berenguela DE CASTILLA, daughter of Infante don Alfonso VIII "el Noble" DE CASTILLA and Eleanor PLANTAGENET, Princess of England, in Dec 1197 in Valladolid, Spain. (Berenguela DE CASTILLA was born about Jun 1180 in Segovia, Castile, Spain and died on 8 Nov 1246 in Las Huelgas, Burgos, Castile y León, Spain.)


1 Foundation for Medieval Genealogy, Medlands: Infante don Alfonso de León.

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