3x5 Spanish Cross of Burgundy Flag

The Cross of Burgundy Flag was used by Spain from 1506-1785. The design is a red saltire resembling two crossed, roughly-pruned (knotted) branches, on a white field. In heraldic language, it may be blazoned Argent, a saltire ragulée gules. It represents the cross in which Saint Andrew was crucified. It was chosen by Philip I of Castile (Philip the Handsome) after his marriage to Joanna of Castile (Joanna the Mad), as it was the symbol of the house of his mother, Mary of Burgundy.