Afonso I of Portugal
The name "Santos" refers to three Christian martyrs executed on the top of a Lisbon hill and, in 589, when the Visigoth King Reccared I converted to Christianity, a temple in remembrance of the three saints was built there; it was later destroyed. Following the conquest of Lisbon, King Afonso I of Portugal rebuilt the church and gave it to the Order of Santiago, which made it their headquarters.