The Coat of Arms presented here represents Queen Isabella of Castile during her reign from 1492 to 1504. This heraldic symbol consists of a shield divided into four quarters, each with unique symbols that reflect the queen's familial and royal lineage.The first quarter displays the Pendragon, symbolizing Queen Isabella's paternal grandmother, Isabel of Portugal. The second quarter represents Castile and shows the Castle and Lion symbols. The third quarter signifies Leon and features a Lion passant guardant on a field of purpure. Lastly, the fourth quarter represents the House of Trastmara with its Castle and Yoke and Arrows emblems.The overall design is completed with a shield mantled gules doubled or, each mantling supported by six supporters representing the orders of chivalry that Queen Isabella belonged to: the Order of the Golden Fleece, the Order of Christ, the Order of the Bath, and the Order of Santiago.The Coat of Arms of Queen Isabella of Castile is a significant emblem in the history of Spain, symbolizing her rule during one of the most significant periods in Spanish history, including the discoveries of Christopher Columbus and the early stages of Spanish imperialism.