A dynastic order, monarchical order, or house order is an order under royal patronage. Such an order is bestowed by, as a legitimate fons honorum, a sovereign or the head of a once-sovereign ruling family. These are often considered part of the cultural patrimony of the ruling family. Dynastic orders were often founded or maintained to reward service to a monarch or their subsequent dynasty.
A national or state order is the equivalent term for orders (e.g., of merit) conferred by sovereign states but not bestowed by ruling dynasties.
Dynastic orders are under the exclusive control of a monarch and are bestowed without the advice of the political leadership (prime minister or cabinet). A recent report by the British Government mentioned that there is "one remaining exercise that has been identified of the Monarch's truly personal, executive prerogative: that is, the conferment of certain honours that remain within [the Sovereign’s] gift (the Orders of Merit, of the Garter, of the Thistle and the Royal Victorian Order)."
Generally, dynastic or house Orders are granted by the monarch for whatever reason the monarch may deem appropriate whereas other orders, often called Merit Orders, are granted on the recommendation of government officials to recognize individual accomplishments or services to the nation.
The term dynastic order is also used for those orders that continue to be bestowed by former monarchs and their descendants after they have been removed from power. For instance, the website of Duarte Pio de Bragança, a pretender to the throne of Portugal using the title Duke of Braganza, asserts that the Order of the Immaculate Conception of Vila Viçosa, "being a Dynastic Order of the House of Bragança and not an Order of State, continued to be conferred by the last King Dom Manuel II, in the exile." On the basis of his succession to King Manuel II, Duarte Pio continues to award those orders of the Kingdom of Portugal not taken over by the Portuguese Republic.