Abiathar Crescas
Abiathar Crescas was a 15th- century physician and astrologer from the Crown of Aragon( now part of Spain).
He was head astrologer to King John II of Aragon, father of King Ferdinand of Aragon.
He could remove cataracts by a surgical procedure known as couching.
In 1468 he restored the eyesight of King John in two simple operations, who was completely blind before the surgeries.
Crescas was a leader of Aragon's Jewish community.
Isabella of Aragon, Queen of Germany
Isabella of Aragon( 1305 – 12 July 1330) was the daughter of James II of Aragon and his second wife Blanche of Anjou.
Queen consort of Frederick I of Austria.
She was a member of the House of Aragon
Joanna of Aragon, Countess of Ampurias
Joanna of Aragon( Barcelona 7 November 1344- Castellón, Ampurias 1385) was the second child of Peter IV of Aragon and his first wife Maria of Navarre.
She was an Infanta of Aragon by birth and Countess of Ampurias by her marriage.
She was a member of the House of Aragon.
Ramon Berenguer IV, Count of Barcelona
Ramon Berenguer IV (c. 1114 – 6 August 1162, Anglicized Raymond Berengar IV), sometimes called the Saint, was the Count of Barcelona who brought about the union of his County of Barcelona with the Kingdom of Aragon to form the Crown of Aragon.
Eleanor of Aragon, Queen of Castile
Eleanor of Aragon (20 February 1358 – 13 August 1382) was a daughter of King Peter IV of Aragon and his wife Eleanor of Sicily.
She was a member of the House of Aragon and Queen of Castile by her marriage.
Isabella of Aragon, Countess of Urgell
Isabella of Aragon( 1376, Barcelona – 1424) was a daughter of Peter IV of Aragon and his fourth wife, Sibila of Fortia.
She was infanta of Aragon and Countess of Urgel.
Eleanor of Aragon, Countess of Toulouse
Eleanor of Aragon, Countess of Tolouse( 1182–1226) was a daughter of King Alfonso II of Aragon and Sancha of Castile, Queen of Aragon.
She married Raymond VI, Count of Toulouse.
Sancha, Lady of Alenquer
Sancha of Portugal( 1180 in Coimbra – 13 March 1229 in Celas Monastery), was a Portuguese" infanta", second daughter of King Sancho I of Portugal and Dulce of Aragon.
Dulce of Aragon
Dulce of Aragon (or of Barcelona; ; 1160 – 1 September 1198) was Queen consort to King Sancho I of Portugal.
As the eldest daughter of Ramon Berenguer IV, Count of Barcelona and his wife, Queen Petronila of Aragon, she was the sister of the future King Alfonso II of Aragon.
Her bethrothal to "infante" Sancho, son of Afonso Henriques, the first king of Portugal, was celebrated when she was eleven years old and the marriage in 1174.
Not much is known about her life prior to her arrival in Portugal or of the wedding tokens she received upon her marriage.
"A beautiful and excellent lady, quiet and modest, her personality coinciding with her name," Dulce was used as a commodity to seal an alliance which aimed to "strengthen Portugal and to contain the expansionism of Castile and León" and she played the role that was expected of her as a wife and as the mother of numerous children.
At the same time, the marriage compensated for the broken engagement of her husband's sister, Infanta Mafalda with her brother, the future King Alfonso II of Aragon.
With the death of King Afonso Henriques in 1185, her husband ascended the throne and she became Queen consort of Portugal.
In his first will, executed in 1188, her husband gave her the income from Alenquer, of the lands along the banks of the Vouga River, of Santa Maria da Feira and of Oporto.
Dulce did not live long after the birth of her last two daughters, Branca and Berengaria, probably twins, and died in 1198 probably succumbing to the plague and weakened by the successive childbirths.
She was buried in the Monastery of Santa Cruz in Coimbra.
Berengaria of Portugal
Berengaria of Portugal( c. 1198 – 27 March 1221) was a Portuguese" infanta"( princess) and Queen of Denmark, by marriage to King Valdemar II.
She was the fifth daughter of King Sancho I of Portugal and Dulce of Aragon.
She was the mother of Danish kings Eric IV, Abel and Christopher I.

Question: Which country Dulce Of Aragon's father is from?
Answer: County of Barcelona