Background
Beatrice was the only child of Marquis Aldobrandino I of Este but her mother's name and origin is unknown. Since her father died in the year of her birth, she was educated by her uncle, Marquis Azzo VII of Este.
Beatrice was the only child of Marquis Aldobrandino I of Este but her mother's name and origin is unknown. Since her father died in the year of her birth, she was educated by her uncle, Marquis Azzo VII of Este.
In the beginning of 1234, the elderly King Andrew II of Hungary, who had been widowed for the second time in 1233, visited the court of the Este family and fell in love with the young Beatrice. Their marriage was celebrated on 14 May 1234 in Székesfehérvár, and King Andrew promised in their conjugal contract that he would grant 5,000 pounds as marriage portion to Beatrice and Beatrice would also receive 1,000 pounds as her annual revenue. Beatrice could escape from Hungary only with the assistance of the ambassadors of Frederick II, Holy Roman Empire who had arrived to the deceased king's funerals.
She spent the following years wandering in Italy, and she never gave up her son's claims to receive ducal revenues from Hungary. Pope Innocent IV granted her revenues of 35 monasteries in Italy. 14 May 1234: King Andrew II of Hungary (c 1177 – 21 September 1235).