Flag of Castile and León
|Design||It consists of the quartered coats of arms of Castile, represented by a castle, and León, represented by a lion. |
The lion design is attributed to Alfonso VII of León, who became king of León and Castile in 1126. The castle symbol is attributed to his grandson Alfonso VIII of Castile, In 1230, Ferdinand III of Castile united the two kingdoms in the Crown of Castile (1230-1715) and quartered the arms as a symbol of the union. 
This flag is used to represent the two cultural identities who share this administrative region, the Castle for Castile, and the Lion for León.