Charles V, Holy Roman Emperor, or Charles I of Spain, was the heir of four of Europe's leading royal houses. He was the first sole monarch of Spain, inheriting the kingdoms first united by his maternal grandparents, Isabella of Castile and Ferdinand II of Aragon (the Catholic Monarchs). From his father, Philip I of Castile, he inherited the Burgundian Netherlands, which came from his paternal grandmother, Mary of Burgundy. Finally, on the death of his paternal grandfather, Maximilian I, Holy Roman Emperor, he inherited the Habsburg lands in Austria. His coat of arms, representing much of the land he inherited, is blazoned as follows:
Quarterly: I and IV grand-quarterly i and iv great-grand-quarterly 1 and 4 gules a three towered castle Or masoned sable and ajouré azure (for Castile), 2 and 3 argent a lion rampant purpure crowned Or langued and armed gules (for Leon), ii per pale, dexter per fess, in chief Or four pallets gules (for Aragon), in base gules a cross, saltire, and orle of chains linked together Or and a centre point vert (for Navarre), sinister argent a cross potent and four crosslets Or (for Jerusalem) impaling barry of eight gules and argent (for Hungary), iii per pale, dexter per fess, in chief Or four pallets gules (for Aragon), in base gules a cross, saltire, and orle of chains linked together Or and a centre point vert (for Navarre), sinister per saltire, 1 and 4 Or four pallets gules, 2 and 3 argent an eagle displayed sable (for Sicily); II and III grand-quarterly, i gules a fess argent (for Austria), ii azure semy-de-lis Or a bordure compony argent and gules (new Burgundy), iii bendy of six Or and azure a bordure gules (old Burgundy), iv sable a lion rampant Or langued and armed gules (for Brabant), overall at the fess point of the quarter an inescutcheon Or a lion rampant sable armed and langued gules (for Flanders) impaling argent an eagle displayed gules, armed, beaked, and langued Or (for Tyrol); enté en point argent a pomegranate proper seeded gules, supported, sculpted and slipped vert (for Granada).
Supporters: A bicephalous eagle displayed sable imperially crowned proper in front of a saltire ragulée gules, the whole between two columns argent issuing from the sea proper in base, the one to dexter crowned imperially proper, the one to sinister crowned with the Royal Crown of Spain proper. The motto, PLVS VLTRA, wraps around the columns.
Although the territory of the Duchy of Burgundy itself remained in the hands of France, the Habsburgs remained in control of the title of Duke of Burgundy and the other parts of the Burgundian inheritance, notably the Low Countries and the Free County of Burgundy in the Holy Roman Empire. They often used the term Burgundy to refer to it until the late 18th century, when the Austrian Netherlands were lost to the French Republic.