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Birth:          11 Nov 1154 of Coimbra, Portugal
Death:          26 Mar 1212 Coimbra, Portugal
Burial:         Igregarde Santa Cruz, Coimbra, Portugal

Notes
https://en.wikipedia.org/wiki/Sancho_I_of_Portugal
Sancho I (Portuguese pronunciation: ['s?~?u]), nicknamed "the Populator" 
(Portuguese: "o Povoador"), King of Portugal (Coimbra, 11 November 1154[1] – 26 
March 1211[2][3]) was the second but only surviving legitimate son and fifth child of 
Afonso I of Portugal by his wife, Maud of Savoy. Sancho succeeded his father and 
was crowned in Coimbra when he was 31 years old on 9 December 1185.[4] He used 
the title King of Silves from 1189 until he lost the territory to Almohad control in 1191.
[5]
Early life[edit]

Sancho was baptized with the name Martin (Martinho) since he was born on the feast 
day of Saint Martin of Tours.[6][7] On 15 August 1170, he was knighted by his father, 
King Afonso I,[8] and from then on he became his second in command, both 
administratively and militarily. At this time, the independence of Portugal (declared in 
1139) was not firmly established. The kings of León and Castile were trying to re-
annex the country and the Roman Catholic Church was late in giving its blessing and 
approval. Due to this situation Afonso I had to search for allies within the Iberian 
Peninsula. Portugal made an alliance with the Crown of Aragon and together they 
fought Castile and León. To secure the agreement, Sancho married Dulce,[9][10] 
younger sister of King Alfonso II of Aragon, in 1174. Aragon was thus the first Iberian 
kingdom to recognize the independence of Portugal.

Succession[edit]

With the death of Afonso I in 1185, Sancho I became the second king of Portugal. 
Coimbra was the centre of his kingdom; Sancho terminated the exhausting and 
generally pointless wars against his neighbours for control of the Galician borderlands. 
Instead, he turned all his attentions to the south, towards the Moorish small kingdoms 
(called taifas) that still thrived. With Crusader help he took Silves in 1188.[11] Silves 
was an important city of the South, an administrative and commercial town with 
population estimates around 20,000 people. Sancho ordered the fortification of the 
city and built a castle which is today an important monument of Portuguese heritage. 
However, military attention soon had to be turned again to the North, where León and 
Castile threatened again the Portuguese borders. Silves was again lost to the Moors in 
1191.[12]

Legacy[edit]

Sancho I dedicated much of his reign to political and administrative organization of 
the new kingdom. He accumulated a national treasure, supported new industries and 
the middle class of merchants. Moreover, he created several new towns and villages 
(like Guarda in 1199[13]) and took great care in populating remote areas in the 
northern Christian regions of Portugal – hence the nickname "the Populator".[14] The 
king was also known for his love of knowledge and literature. Sancho I wrote several 
books of poems and used the royal treasure to send Portuguese students to European 
universities. He died in Coimbra, aged 56.

Marriage and issue[edit]

Sancho married Dulce, daughter of Raymond Berenguer IV, Count of Barcelona, and 
Petronilla, Queen of Aragon. Eleven children were born from her marriage to King 
Sancho, nine of whom reached adulthood:

Theresa (1175/1176 – 18 June 1250),[15][16] she became the wife of King Alfonso IX 
of León and was beatified in 1705;
Sancha (1180 – 13 March 1229),[17] founded the Monastery of Celas near Coimbra 
where she lived until her death. Her sister Theresa arranged for her burial at the 
Monastery of Lorvão. She was beatified by Pope Clement XI in 1705, the same year as 
Theresa;[18]
Constanza (May 1182 – 3 August 1202). She must have died before 1186 since her 
name is not registered in any of the documents of the chancellery of Sancho I which 
begins in that year";[16] [a]
Afonso (23 April 1186[19] – 25 March 1223), succeeded his father as the third king of 
Portugal;
Raymond (1187/88 – 9 March bef. 1188/89), who died in infancy;[19][b]
Peter (23 February 1187[19] – 2 June 1258), spouse of Aurembiaix, countess of Urgell;
Ferdinand (24 March 1188[19] – 27 July 1233), count through his marriage to Joan, 
Countess of Flanders;
Henry (aft. March 1189 – 8 Dec aft. 1189), who died during infancy;[19][c]
Mafalda (1195/1196[19] – 1 May 1256), the wife of Henry I of Castile, was beatified in 
1793;
Branca (1198 – 17 November 1240), probably the twin sister of Berengaria,[19] was 
raised in the court with her father and his mistress "a Ribeirinha" and, when she was 
eight or ten years old, was sent to live with her sisters at the Monastery of Lorvão. 
She was a nun at a convent in Guadalajara and was buried at the same monastery as 
her mother;[20]
Berengaria (1198 – 27 March 1221), probably the twin sister of Branca,[19] married 
Valdemar II of Denmark in 1214.[21]

Children out of wedlock[edit]

With Maria Aires de Fornelos, daughter of Aires Nunes de Fornelos and Maior Pais, 
who was buried at the Monastery of Santo Tirso in accordance with her last will, 
Sancho had two children, both born before his marriage to Dulce of Aragon:[22][23][d]
Martim Sanches (born before 1175)[25][23] Count of Trastámara. Martim married Elo 
Pérez de Castro, daughter of Pedro Fernández de Castro, with no issue from this 
marriage;[26]
Urraca Sanches[16] (born before 1175),[27][26] was married to Lourenço Soares, son 
of Soeiro Viegas and Sancha Bermúdez de Traba.

After Dulce's death, he had an affair with María Pais de Ribeira "a Ribeiriña" for 
whom he wrote and dedicated a cantiga de amigo, A Ribeirinha, composed in 1199, 
the oldest text known in Portuguese poetry.[23] At least six children were born of this 
relationship:[28][29]
Rodrigo Sanches (died 1245), had a bastard son with Constança Afonso de Cambra 
called Afonso Rodrigues, a Franciscan friar and the "Guardian of the Convent of 
Lisbon";[26][30]
Gil Sanches (died on 14 September 1236), a cleric and troubadour, his father left him 
8,000 morabetinos in his will. Gil granted fueros to the settlers of Sardezas in 1213;
[26][31]
Nuno Sanches, he died in his childhood on a 16 of December in an unknown year. He 
could also have been the son of Maria Aires de Fornelos;[32]
Maior Sanches, also died at an early age on 27 of August of an unknown year;[33]
Teresa Sanches, her father left her 7,000 morabetinos in his will. She was the second 
wife of Alfonso Téllez de Meneses whom she married before 1220 and with whom she 
had issue;[26]
Constança Sanches (1204-8 August 1269). Her father left her 7,000 morabetinos in his 
will. She was the God-mother of her grand-niece, Infanta Sancha and left her half of 
Vila do Conde, Avelaneda, Pousadela, Parada and Maçãs. She also owned estates in 
Torres Vedras.[34]

King Sancho also had one son with Maria Moniz de Ribeira, daughter of Munio Osorio, 
tenente of the comarca of Cabreira and Ribera,and of Maria Nunes of Grijó,:[35]
Pedro Moniz, who married a woman whose name is not recorded, and was the father 
of Maria Peres de Cabreira, the wife of Martim Peres Machado, the first to use the last 
name Machado.[36]

Parents
HENRIQUEZ Afonso I "The Conqueror" (25 Jul 1110 - 6 Dec 1185)
OF SAVOY Matilde (Maud) (1125 - 4 Nov 1157)

Siblings
AFFONSEZ Urraca (1151 - 16 Oct 1188)
AFFONSEZ Sancho I "The Popular" (11 Nov 1154 - 26 Mar 1212)

Marriage To ____ Dulce (Aldonza) (ABT 1159 - 1 Sep 1198)
    m.  

Notes

Parents
____ Raymond (Ramon) Berenguer IV (1113 - 6 Aug 1162)
OF ARAGON Petronilla (Petronel) I (1136 - 15 Oct 1173)

Children by ____ Dulce (Aldonza) ABT 1159 - 1 Sep 1198
____ Affonso II "the Fat" (23 Apr 1185 - 25 Mar 1223)

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