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Birth:          ABT 1035 
Death:          6 Jan 1083 Rueda

Notes
res. of Uncastillo y Sanguesa
https://en.wikipedia.org/wiki/Sancho_Garc%C3%A9s,_Lord_of_Uncastillo
Sancho Garcés (c. 1038[1] – 6 January 1083)[2] was an illegitimate son of King García 
Sánchez III of Pamplona and first cousin of King Alfonso VI of León. Lord of Uncastillo 
and Sangüesa, he was the father of Ramiro Sánchez whose son García Ramírez gave 
rise to a new dynasty of Navarrese monarchs.[3]
Biography[edit]

Sancho Garcés was an illegitimate son of King García Sánchez III and a concubine, 
born around 1038 and before his father married Stephanie.[3][4] He was appointed 
tenant-in-chief of Uncastillo and Sangüesa and could have also been the Sancho 
Garcés who appears governing Ruesta (1058), Surta (1065), Autol (1071), and 
Anguiano and Tobía in 1073.[5] He had several siblings from his father's legitimate 
marriage, including King Sancho Garcés IV and Ramiro Garcés. He was also the 
brother of Mencía Garcés, wife of Fortún Ochoiz,[6] also an illegitimate daughter of 
the king, although it is not known if Sancho and Mencía shared the same mother.

He died on 6 January 1083 with his brother Ramiro who led the army sent by Alfonso 
VI in what was to be known as the disaster or the treachery of Rueda, where many 
other nobles lost their lives, including count Gonzalo Salvadórez.[7][a]

Marriage, descendants, and legend[edit]

He married Constanza before 25 November 1057 as indicated in a document from the 
Monasterio of San Prudencio de Monte Laturce when both confirm a sale made by his 
brother the king. They appear together, two weeks later, on 7 December 1057 
confirming as domno Santio testis et uxor eius domna Constanza in the Monastery of 
Albelda.[8] Constanza was previously considered to be a daughter of a Gonzalo 
Marañón. Nevertheless, medievalist Jaime de Salazar y Acha, based on the Chronica 
Naierensis, believes that Constanza could have been a daughter of a previous 
marriage of Stephanie, wife of King García Sánchez III, Sancho's father:

King Sancho II of Castile was promised in marriage to a daughter of Queen Stephanie 
of Navarre whose name is not mentioned in the Chronica, and another Sancho, a 
bastard son of King García, Stephanie's husband, and a concubine, in an outburst of 
love, abducted the bride when she was being escorted to meet her promised spouse, 
and took her to the court of the Moorish king of Zaragoza and later to the court of his 
uncle, King Ramiro who loved him as his own son. This sparked a war between the 
kings of Castile and Aragón and the death of the latter in the Battle of Graus in the 
year 1063.[9]

Although this episode has been considered an unfounded legend, all the characters 
mentioned are documented and these events could have a basis of truth. In a charter 
dated 29 November 1074 recorded in the cartulary of the Monastery of Santa María 
de Otero de las Dueñas,[10][11] King Sancho Garcés IV gives his brother some 
houses and land in Calahorra, declaring: vobis germano meo domno Sancio et uxori 
vestra vel germana mea domna Constancia, that is, "to you, my brother Sancho, and 
to your wife and my sister, doña Constanza".[12]

Sancho and Constanza had two children:
Ramiro Sánchez, married to Cristina Rodríguez, daughter of El Cid and Jimena Díaz;
[13][14]
Estefanía Sánchez, the wife of count Fruela Díaz.[15] One of the daughters of this 
marriage was named after their grandmother Constanza.[14]

Some historians have identified Sancho Garcés with Sancho Macerátiz, tenant-in-chief 
in Oca. Sancho Macerátiz married Andregoto, a kinswoman of Andregoto Galíndez, 
queen of Navarre, and she appears as his widow in 1075 at San Millán de la Cogolla, 
accompanied by her children: Sancho Sánchez de Erro, Andregoto, Sancha, Jimena, 
and Velasquita.[16][17] However, Sancho Garcés is attested with his wife Constanza 
in 1074, leaving no time for a remarriage to Andregoto and the birth of her five 
children within just a year, and furthermore Sancho Garcés was still living seven years 
after Andregoto appears as widow of Sancho Macerátiz, indicating that the two men 
were distinct.[14] He has also on occasion been confused with his like-named half-
brother, King Sancho Garcés IV.

Parents
____ Garcia IV (ABT 1015 - 1 Sep 1054)
----- ----- (concubine) ()

Siblings
GARCES Sancho (Sancho IV) (ABT 1035 - 6 Jan 1083)

Marriage To OF MORANON Constanza (ABT 1035 - )
    m. BEF 25 Nov 1057 

Notes
his 1st

Parents
FORTUN Sancho (ABT 1000 - )
____ Velasquita (ABT 1000 - )

Children by OF MORANON Constanza ABT 1035 - 
SANCHEZ Ramiro II (ABT 1070 - Feb 1116)
SANCHEZ Estefania (ABT 1075 - )

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