Crown of Aragon - House of Barcelona - the four red stripes

the four red stripes on a golden background appears only in the royal images painted of Wilfred the Hairy Count of Barcelona (878–897), Ramon Berenguer IV, Count of Barcelona (1131-1162), King Martin I of Aragon (1356-1410) and King Martin I of Sicily (1390-1409). So it may suggest the Four Red Bars on Golden Background emblem was believed to belong to the House of Barcelona and the Counts of Barcelona in times of the initial dynasty (1164–1410) who ruled the Crown of Aragon.