The Flag of Catalonia reference article from the English Wikipedia on 24-Jul-2004
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Flag of Catalonia

Sponsorship the way you would do it
Flag of Catalonia
Flag proportions 2:3

The Catalan flag is said to be one of the oldest of the world. A 14th century legend says it originated in the 9th century; but this is not believed, the 11th century (pre-heraldical symbols) or 12th century are seen as more likely.

The legend tells that the four red bars were drawn on Wilfred I the Hairy's (Count of Barcelona) golden shield by the king Carles el Calb's fingers drenched with the blood in the Count's war wounds.

See also

The Catalan flag at Flags of the World site