Ilduara Mendes
Countess of Portugal, 1015-1028
Ilduara Mendes or Ilduara Menéndez (attested 1025 – 1058), was a Countess of Portugal, and regent of Portugal during the minority of her son.
Daughter of Count Menendo González and his wife Tutadomna Moniz, Ilduara had several brothers and sister, including Elvira Menéndez, wife of King Alfonso V of León. She governed the county jointly with her husband Count Nuno Alvites, son of Alvito Nunes and Gontina. Since their son Mendo Nunes was a minor in 1028 when his father died, he governed the county under the tutelage of his mother Ilduara.