She was daughter of the Earl Aznar Sánchez of Larraun and Onneca Fortúnez, and sister of Sancha Aznárez, who was married to Jimeno Garcés of Pamplona. Toda was the granddaughter of Fortún Garcés of Pamplona. She was the daughter of Aznar Sánchez, lord of Larraun, paternal grandson of king García Íñiguez of Pamplona, while her mother Onneca Fortúnez was a daughter of king Fortún Garcéson
Thus, Toda"s children were also descendants of the Arista dynasty of Navarrese monarchs. Toda violated her treaty in 937, forcing a punitive campaign. During several stretches she appears in the royal charters of the kingdom to the exclusion of her daughter-in-law, the queen, from 947 to 955, and again in 959.
In 958 she was ruling her own subkingdom, in the area of Degio and Lizarra, towns not otherwise identified.
Toda requested the assistance of Abd-ar-Rahman III, the Caliphate of Córdoba being renowned for its physicians. The caliph sent her his Jewish physician Hasdai ibn Shaprut, who promised to cure Sancho on condition that Toda visit the city of Córdoba.
The arrival of this Christian queen in the capital of an Islamic caliphate enhanced Abd-ar-Rahman III"s prestige among his subjects, and is considered a landmark in the history of medieval diplomacy. Sancho"s medical treatment was successful, and he was "relieved from his excessive corpulence." She died in 958.
