Nielsen Hayden genealogy
Garcia Sanchez I "el Tremuloso", King of Navarre
Abt 917 - 970 (~ 53 years)-
Name Garcia Sanchez I "el Tremuloso" Suffix King of Navarre Birth Abt 917 [1] Gender Male Alternate birth Abt 919 [2] Death 970 [2, 3] 
Siblings1 sibling Person ID I10348 Ancestry of PNH, TNH, and others | Ancestor of AP, Ancestor of DDB, Ancestor of DGH, Ancestor of DK, Ancestor of EK, Ancestor of JTS, Ancestor of LD, Ancestor of LDN, Ancestor of LMW, Ancestor of TNH, Ancestor of TSW, Ancestor of TWK, Ancestor of UKL, Ancestor of WPF, Ancestor of XYZ Last Modified 6 Jan 2018
Father Sancho Garcés I "Abarca", King of Navarre, b. Abt 865 d. 11 Dec 925 (Age ~ 60 years) Mother Toda Aznárez, b. Abt 885 d. Aft 970 (Age ~ 86 years) Family ID F4248 Group Sheet | Family Chart
Family Andregoto Galìndez d. 972 Children + 1. Sancho Garcés II, King of Navarre, b. Aft 935 d. Dec 994 (Age < 57 years) Family ID F839 Group Sheet | Family Chart Last Modified 5 May 2024
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Notes - "Garcia Sanchez I appears as king about 929, and is sole king from 931, although his mother Toda served as regent until he overthrew her control with the help of her kinsman, Abd ar Rahman III. He then continued to rule, largely under the thumb of Abd ar Rahman until the latter's death in 961, and on to 970. [...The nickname] 'the Trembler' is more in line with the life of Garcia I, who after expelling his mother spent his entire reign trembling under the thumb of Cordoba without putting up any resistance, and not to Garcia II, who though unsuccessful, stood up to Cordoba and tried to escape from their yoke." [Todd A. Farmerie, citation details below.]
From Leo van de Pas's site:
Garcia was born about 919, the son of Sancho I Garcés, king of Navarre, and Toda Aznárez. He was the king of Pamplona from the death of his uncle Jimeno Garcés. As he was just six years old at the time of his father's death, his uncle succeeded, and it was only in 930, the last year of the latter's reign, that Garcia appears with the royal title, though this was probably just a courtesy. On Jimeno's death in 931 the 12-year old Garcia succeeded, with his mother Toda serving as regent. This regency ended in 934, when his first cousin Caliph Abd-ar-Rahman III intervened on his behalf, and Garcia began to rule as sole king.
- "Garcia Sanchez I appears as king about 929, and is sole king from 931, although his mother Toda served as regent until he overthrew her control with the help of her kinsman, Abd ar Rahman III. He then continued to rule, largely under the thumb of Abd ar Rahman until the latter's death in 961, and on to 970. [...The nickname] 'the Trembler' is more in line with the life of Garcia I, who after expelling his mother spent his entire reign trembling under the thumb of Cordoba without putting up any resistance, and not to Garcia II, who though unsuccessful, stood up to Cordoba and tried to escape from their yoke." [Todd A. Farmerie, citation details below.]
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Sources - [S1502] Todd Farmerie, 5 Sep 2017, post to soc.genealogy.medieval summarizing the arguments of Alberto Cañada Juste, "Doña Onneca, una princesa vascona en la corte de los emires cordobeses", Príncipe de Viana, 74:481-502 (2013).
- [S49] Genealogics by Leo Van de Pas, continued by Ian Fettes and Leslie Mahler.
- [S1453] Todd A. Farmerie, 19 Feb 2017, post to soc.genealogy.medieval.
- [S1502] Todd Farmerie, 5 Sep 2017, post to soc.genealogy.medieval summarizing the arguments of Alberto Cañada Juste, "Doña Onneca, una princesa vascona en la corte de los emires cordobeses", Príncipe de Viana, 74:481-502 (2013).