Family: Fernando III de Castilla / Comtesse de Ponthieu Jeanne de Dammartin (F838)
m. Oct 1237
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Male
Fernando III de Castilla
Birth 5 Aug 1201 Castilla y Leon, Spain 
Death 30 May 1252 Sevilla, Seville, Andalucia, Spain Burial Marriage Oct 1237 [1, 2, 3] Burgos, Burgos, Castilla-Leon, Spain [1, 2, 3] Other Spouse Princes of Swabia Elizabeth Von Hohenstaufen | F903 Marriage 30 Nov 1219 Father Rey de Castilla y Leon Alfonso de Leon, IX | F908 Group Sheet Mother Berengaria Sanchez de Castilla | F908 Group Sheet
Female
Comtesse de Ponthieu Jeanne de Dammartin
Birth 1220 Dammartin, Seine-et-Marne, Ile-de-France, France Death 16 Mar 1279 Abbeville, Somme, Picardie, France Burial 1279 Father Mother
Female
+ Comtesse de Ponthieu Eleanor de Castilla
Birth 1241 Burgos, Burgos, Castilla-Leon, Spain Death 29 Nov 1290 Harby, Nottinghamshire, England Burial 16 Dec 1290 Westminster, London, England Spouse Edward I Longshanks Plantagenet | F907 Marriage 18 Oct 1254 Burgos, Burgos, Castilla-Leon, Spain
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Sources - [S778] Bio Info on Dammartin Jeanne of, (Name: Wikipedia; Location: http://en.wikipedia.org/wiki/Joan,_Countess_of_Ponthieu;), http://en.wikipedia.org/wiki/Joan,_Countess_of_Ponthieu.
http://en.wikipedia.org/wiki/Joan,_Countess_of_Ponthieu - [S323] thePeerage.com, (Name: thePeerage.com;), Dammartin Jeanne of #104856 http://thepeerage.com/p10486.htm#i104856.
- [S340] Montgomery, Thomas Harrison, Genealogical History of the Family of Montgomery, (Name: Printed for Private Circulation; Location: Philadelphia; Date: 1868;), Pages 036-045 IX-XII John Montgomerie through John Montgomery of Eaglesham https://www.ancestry.com/search/collections/12151/?count=50&f-F00032DB=36.
Book found at Ancestry.com
https://www.ancestry.com/search/collections/12151/
Electronic Book .PDF 170 pages
a_genealogical_history_of_the_family_of_.pdf
https://www.ancestry.com/search/collections/12151/?count=50&f-F00032DB=36
- [S778] Bio Info on Dammartin Jeanne of, (Name: Wikipedia; Location: http://en.wikipedia.org/wiki/Joan,_Countess_of_Ponthieu;), http://en.wikipedia.org/wiki/Joan,_Countess_of_Ponthieu.