1. KING FERNANDO I THE GREAT¹ OF CASTILE was born between 978/9 and 1025, and died in 1065^[1]. He married (ZN-2) SANCHA OF LEON, daughter of (ZN-1) King Alfonso V and Elvira (VALDES), who died in 1076^[4]. ^{[2, 5]}
Child:

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ALFONSO VI2 OF CASTILE, KING OF CASTILE AND LEON, b. in 1039[1]; d. in 1109[1]; m. (1) (U-23) CONSTANCE OF BURGUNDY of Burgundy, France, d. in 1092, daughter of (U-16) Duke Robert the Old and (ALJ-3) Eleanor (de SEMUR); m. (2) XIMENA NUNIA DE GUZMAN.

2. ALFONSO VI² OF CASTILE, KING OF CASTILE AND LEON (Fernando I the Great¹), son of (1) King Fernando I the Great¹ and (ZN-2) Sancha (of LEON), was born in 1039^[1], and died in 1109^[1]. He married (1st) (U-23) CONSTANCE OF BURGUNDY of Burgundy, daughter of (U-16) Duke Robert the Old and (ALJ-3) Eleanor (de SEMUR), who died in 1092. He married (2nd) XIMENA NUNIA DE GUZMAN. ^{[2, 5, 7]}
Child of: Alfonso VI² of CASTILE, King of Castile and Leon and Constance of BURGUNDY:

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URRACA3 OF CASTILE, QUEEN OF LEON AND CASTILE of Burgos, Burgos, Spain, b. in 1082 of Burgos, Burgos, Spain; d. on 8 March 1126 in Castile, Spain; m. in 1095 in Burgundy (XA-14) RAYMOND OF BURGUNDY, b. in Burgundy, France about 1065, d. in France on 26 March 1107, son of (XA-12) Count William I "the Great" and (AAE-2) Stephanie (de LONGWY).

Child of: Alfonso VI² of CASTILE, King of Castile and Leon and Ximena Nunia de GUZMAN:

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THERESA3 OF CASTILE, b. about 1090; d. in 1130[1]; m. (U-29) COUNT HENRY I OF PORTUGAL of Portugal, b. of Portugal[1] in 1069[1], d. on 1 Nov. 1112[1], son of (U-21) Duke Henry and Sibylle (_____).

3. URRACA³ OF CASTILE, QUEEN OF LEON AND CASTILE (Alfonso VI², Fernando I the Great¹) of Burgos, Burgos, Spain, daughter of (2) Alfonso VI², King of Castile and Leon and (U-23) Constance (of BURGUNDY), was born in 1082 of Burgos, Burgos, Spain, and died on 8 March 1126 in Castile. She married in Burgundy, France, in 1095, (XA-14) RAYMOND OF BURGUNDY, son of (XA-12) Count William I "the Great" and (AAE-2) Stephanie (de LONGWY), who was born about 1065 in Burgundy, and died on 26 March 1107 in France. ^{[3, 5, 6, 8, 9]}
Child: See (XA-14) Raymond of BURGUNDY
4. THERESA³ OF CASTILE (Alfonso VI², Fernando I the Great¹), daughter of (2) Alfonso VI², King of Castile and Leon and Ximena Nunia (de GUZMAN), was born between 1053/4 and 1095, and died in 1130^[1]. She married (U-29) COUNT HENRY I OF PORTUGAL of Portugal, son of (U-21) Duke Henry and Sibylle (_____), who was born in 1069^[1] of Portugal^[1], and died on 1 Nov. 1112^[1].
Child: See (U-29) Count Henry I of PORTUGAL