Sancho Alfónsez, Infante de Castilla y León

Is your surname Alfónsez?

Research the Alfónsez family

Sancho Alfónsez, Infante de Castilla y León's Geni Profile

Share your family tree and photos with the people you know and love

  • Build your family tree online
  • Share photos and videos
  • Smart Matching™ technology
  • Free!

Sancho Alfónsez, Infante de Castilla y León

Birthplace: Of, Toledo, Castile
Death: May 29, 1108 (14)
Killed In Battle With The Almoravids
Place of Burial: Prince
Immediate Family:

Son of Alfonso VI the Brave, King of Castile and León and Dª. Zaida (Isabella), reina consorte de León
Brother of Elvira Alfónsez, infanta de Castilla y León and Sancha Alfónsez, Infanta de Castilla y León
Half brother of N.N. Alfonso de Léon; Elvira Alfonso, condesa de Tolosa; Teresa de Leão, condessa de Portugal; Urraca I, reina de Castilla y León and Elvira de Castilla

Managed by: Private User
Last Updated:

About Sancho Alfónsez, Infante de Castilla y León


His birth altered the political situation in Castile. Although illegitimate, he was the only son of his father, born during his father's old age. Alfonso doted on him. By 1102 Sacho's name featured among the subscriptions to royal diplomas. In 1105 and 1106 his name headed the witness-lists, coming immediately after the royal subscription, above those of Raymond and Urraca. By 1107 it was clear that he was the heir apparent. In 1108 he was killed in battle.

King Alfonso VI & his fifth wife had three children (born before the marriage of their parents):

2. Infante don SANCHO de Castilla y León (Sep 1093[556]-killed in battle Uclés 29 May 1108). The Chronicon Regum Legionensium names "Zaida, the daughter of King Abenabeth of Seville, who was baptised…Elisabeth" as the second of two concubines of King Alfonso, and their son "Sancho who died at the battle of Ucles"[557]. Legitimated by the subsequent marriage of his parents. Ruling in Medinaceli 1107[558]. "…Sancius infans Toletani imperatoris filius" subscribed the charter dated 23 Mar 1103 under which "Adefonsus totius Ispanie imperator" donated property to the monastery of San Salvador de Oña with the consent of "uxoris mee Helisabet regine"[559]. "…Helisabet Regina, Reimundus comes, Urraca regis filia, Sancius filius regis…" subscribed the charter dated 14 May 1107 under which "Adefonsus…Toletani imperii rex…cum…uxore mea Helisabet regina" approved the mint of Santiago de Compostela[560]. He was formally recognised as heir to the throne at the council of León [May] 1107[561]. The Anales Toledanos record that “Infant D. Sancho è al Conde D. Garcia” were killed “cerca de Uclés III Kal Jun” in 1108[562].

view all

Sancho Alfónsez, Infante de Castilla y León's Timeline

September 1093
Of, Toledo, Castile
May 29, 1108
Age 14
Killed In Battle With The Almoravids