at the Monastery of Santa Cruz where her husband, who survived her by more than twenty-seven years, was later interred. She was survived by six of her seven children, only three of whom, infantes Sancho, Urraca and Theresa, would reach adulthood. Marriage and issue Although the Annales D. Alfonsi Portugallensium Regis, record that the wedding of Alfonso and Mafalda was celebrated in 1145, it was not until a year later, in May 1146, when they both appear in royal charters. Historian José Mattoso refers to another source, Noticia sobre a Conquista de Santarém (News on the Conquest of Santarém), which states that the city was taken on 15 May 1147, less than a year after their marriage. Since at that time no wedding ceremony could be performed during Lent, Mattoso suggests that the marriage could have taken place in March or April of 1146, possibly on Easter Sunday which fell on 31 March of that year. The groom was almost thirty-eight years old and the bride was about twenty-one years old. The children of this marriage were: Henry (5 March 1147– June 1155), named after his paternal grandfather, Henry, he died when he was only eight years old. Despite being just a child he represented his father at a council in Toledo at the age of three. He died in 1155, shortly after the birth of his brother Sancho. Urraca (1148– 1211), married King Ferdinand II of León and was the mother of King Alfonso IX. The marriage was subsequently annulled in 1171 or 1172 and she retired in Zamora, one of the villas that she had received as part of her arras, and later at the Monastery of Santa María in Wamba, Valladolid where she was buried.; Theresa (1151– 1218), Countess consort of Flanders due to her marriage to Philip I and Duchess consort of Burgundy through her second marriage to Odo III; Mafalda (1153– after 1162). In January 1160, her father and Ramón Berenguer IV, Count of Barcelona, negotiated the marriage of Mafalda to Alfonso, future King Alfonso II of Aragon who at that time was three or four years old. After the death of Ramón Berenguer IV in the summer of 1162, King Ferdinand II of León convinced his widow, Queen Petronilla, to cancel the infante's wedding plans with Mafalda and for Alfonso to marry instead Sancha, daughter Alfonso VII of León and his second wife Queen