Manuel I of Portugal
Manuel's mother was the granddaughter of King John I of Portugal, whereas his father was the second surviving son of King Edward of Portugal and the younger brother of King Afonso V of Portugal. In 1495, Manuel succeeded his first cousin, King John II of Portugal, who was also his brother-in-law, as husband to Manuel's sister, Eleanor of Viseu.
Sancho I of Portugal
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. 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. At the time he also styled himself "By the Grace of God, King of Portugal and Silves ("Dei Gratiæ, Rex Portugalliæ et Silbis"). 
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.