-Aragon and Castile merge to form Spain

Kingdom of Spain
	Aragon and Castile Houses
		-Ferdinand V and Isabella I (1474-1504)
		-Joanna the Mad (1504-1506)
		-Philip I (1504-1506)
		-Ferdinand V (1506-1516)
	Hapsburg House
		-Charles I, Germany (1516-1556)
		-Philip II (1556-1598)
		-Philip III (1598-1621)
		-Philip IV (1621-1665)
		-Charles II (1665-1700)
	Capet-Bourbon House
		-Philip V (1700-1724)
		-Louis (1724)
		-Philip V (Restored: 1724-1746)
		-Ferdinand VI (1746-1759)
		-Charles III (1759-1788)
		-Charles IV (1788-1808)
		-Ferdinand VII (1808)
	Bonaparte House
		-Joseph (1808-1813)
	Capet-Bourbon House
		-Ferdinand VII (Restored: 1813-1833)
		-Isabella II (1833-1868)
	Savoy House
		-Amadeo (1870-1873)

Republic of Spain
	Presidency
		-Estanislao Figueras (1873)
		-Francisco Pi Margal (1873)
		-Nicolas Salmeron y Alonso (1873)
		-Emilio Castelar y Ripoll (1873-1874)
		-Francisco Serrano y Dominquez (1874)

Kingdom of Spain
	Capet-Bourbon House
		-Alfonso XII (1874-1885)
		-Maria de Las Mercedes (1885-1886)
		-Alfonso XIII (1886-1931)

Republic of Spain
	Presidency
		-Niceta Alcala Zamora (1931-1936)
		-Manuel Azana (1936-1939)
	Chief of State
		-Francisco Franco (1939-1975)

Kingdom of Spain
	Capet-Bourbon House
		-Juan Carlos (1975-       )