Battle of July between the forces King Alfonso lll of Castile and the Almohads led by Abu Yusuf Ya'qub al-Mansur. The religious orders involved were the Order of Santiago and the Order of Evora (Avis; which these two knights belong to).
"The First Crusade". Warriors from many parts of western Christendom took part in the First Crusade and, though there was a great deal of uniformity in European military equipment at this time, there were also regional variations. By Richard Hook