Catalan flag in the Principality
Flag that appears in the act of recognition of the royal power in the Castle of Moncada (Vic), in the 14th century, horizontal, swallowtailed, with a lenght between a pennant and a flag. Identical design but with longer, pennant type, was used at sea in times of king Peter II.
Flag reproduced by Domenech from an album or armorial from the Royal Library of Madrid, purportedly used in the 14th century.
Flag reproduced in Gelres armorial (Claes Heinen or Heneysoen) in 1380: red vertical with four yellow bars. Gelre attributes it to Majorca but surely it is a mistake since the royal coat-of-arms is correctly drawn in yellow with four red bars, and perhaps the difference in colours brought him to attribute it to the insular territory.