[1] On January 18, 1174, she married King Alfonso II of Aragon at Zaragoza;[2] they had at least eight children who survived into adulthood.

A patroness of troubadours such as Giraud de Calanson and Peire Raymond, the queen became involved in a legal dispute with her husband concerning properties which formed part of her dower estates.

After her husband died at Perpignan in 1196, Sancha was relegated to the background of political affairs by her son, Peter II.

She retired from court, withdrawing to the Hospitaller convent for noble ladies, the Royal Monastery of Santa María de Sigena, which she had founded.

Sancha died soon afterwards, aged fifty-four, and was interred in front of the high altar of her foundation at the Sigena monastery; her tomb is still there to be seen.