Ferdinand III of Castile
Ferdinand III (Spanish: Fernando III), 1199/120130 May 1252, called the Saint ("el Santo"), was King of Castile from 1217 and King of León from 1230 as well as King of Galicia from 1231.
He was the son of Alfonso IX of León and Berenguela of Castile.
Through his second marriage he was also Count of Aumale.
Ferdinand III was one of the most successful kings of Castile, securing not only the permanent union of the crowns of Castile and León, but also masterminding the most expansive campaign of Reconquista yet.
By military and diplomatic efforts, Ferdinand greatly expanded the dominions of Castile into southern Spain, annexing many of the great old cities of al-Andalus, including the old Andalusian capitals of Córdoba and Seville, and establishing the boundaries of the Castilian state for the next two centuries.
Ferdinand was canonized in 1671 by Pope Clement X and, in Spanish, he is known as "Fernando el SantoSan Fernando" or "San Fernando Rey".
Places such as the cities of San Fernando, Pampanga and San Fernando, La Union; the Diocese of Ilagan and the San Fernando de Dilao Church in Paco, Manila in the Philippines; and in California, United States, the City of San Fernando and the San Fernando Valley, were all named after him (namesakes) and placed under his patronage.
Joan, Countess of Ponthieu
Joan of Dammartin (c. 1220 – 16 March 1279) was Queen consort of Castile and León by marriage to Ferdinand III of Castile.
She also ruled as Countess of Ponthieu (1251–1279) and Aumale (1237–1279).
Her daughter, the English queen Eleanor of Castile, was her successor in Ponthieu.
Ferdinand II, Count of Aumale, her son and co-ruler in Aumale, predeceased her, thus she was succeeded by her grandson John I, Count of Aumale.
William III, Count of Ponthieu
William III of Ponthieu( – 1172) also called William( II; III) Talvas.
He was seigneur de Montgomery in Normandy and Count of Ponthieu.
Guy II of Ponthieu
Guy II of Ponthieu( – 25 December 1147) was the son of William III of Ponthieu and Helie of Burgundy.
Gisela of France, Countess of Ponthieu
Gisèle of France( ca. 968 – 1002) was the daughter of Hugh Capet and Adelaide of Aquitaine.
She married Count Hugh I of Ponthieu around 994.
Her children by Hugh included Enguerrand I of Ponthieu and Guy of Ponthieu.
Agnes, Countess of Ponthieu
Agnes of Ponthieu( c. 1080 – aft. 1105) was ruling Countess of Ponthieu from 1100.
She was the daughter of Count Guy I of Ponthieu.
Enguerrand, the son of Count Guy, died at a youthful age.
Guy then made his brother Hugh heir presumptive, but he also died before Guy( died 1100).
Agnes became count Guy's heiress, and was married to Robert of Bellême.
Their son William III of Ponthieu succeeded to the county of Ponthieu after the death of Agnes( between 1105 and 1111), and the imprisonment of his father in 1112.
John I, Count of Ponthieu
John I of Ponthieu( – 1191) was the son of Guy II of Ponthieu and succeeded him as Count of Ponthieu in 1147.
Marie, Countess of Ponthieu
Marie of Ponthieu( 17 April 1199 – 21 September 1250) was" suo jure" Countess of Ponthieu and Countess of Montreuil, ruling from 1221 to 1250.
Philippe of Dammartin
Philippe of Dammartin( Philippa de Dammartin) was a 13th- century noble woman.
Philippe was the daughter of Simon of Dammartin, Count of Aumâle and his wife Marie of Ponthieu.
She was the sister of Joan, Countess of Ponthieu, wife of Ferdinand III of Castile and mother of Eleanor of Castile, the wife of Edward I of England.
Philippe married three times .< br>
1. Her first marriage was to Raoul II of Lusignan in ca 1239/ 40.
Philippe was his third wife.
They had no children, but she was the stepmother of Marie de Lusignan .< br>
2. Her second marriage was to Raoul II, Lord of Coucy in ca. 1246.
They had one child:
3. Her third marriage was to Otto II, Count of Guelders between 1252 and 1254.
They had four children:
William IV, Count of Ponthieu
William IV Talvas
( 1179 – October 4, 1221) was William III, Count of Ponthieu and William IV( of the house of Belleme/ Montgomery).
He was Count of Ponthieu, ruler of a small province in northern France that fell under the suzerainty of the dukes of Normandy( later also kings of England) since at least the mid 11th century.
He was son and heir of John I, Count of Ponthieu( died 1191) by his third wife Beatrice de St Pol.

Question: Where was the place of death of Joan, Countess Of Ponthieu's husband?
Answer: Seville