How Long Has Your Current Royal House Reigned For?

[Pacomia]

Since never ago. Death to the monarchy. The current government system has been in place since 1980, though. It was established as the Third Republic as a way to clean up the government and try to reduce corruption and confusion, and make it harder for one party to gain control of huge amounts of the government.

[AquilaJordyn]

The Ðardanexia dynasty, the house of Dardanus, Priam & Hektor has reigned for roughly 5000 years. This has earned the dynasty the title 'the elder house of Europe.'

From the History Of The Elder House, A Compendium

The Imperial family's rise to power began with Basileus Dardanus, King of Dardanium, the claimed son of Zeus & Electra. But it would be in the person of his son, Ilus, that the greatest city-state of the families history would come to fruition: The city of Ilius, or romanized: Troy.

Since the fall of their beloved city of Troy in 1300 B.C., the family has ruled the Islands of Syagros faithfully and consistently.

[Quebec-Libre]

This one is rather complicated, because the Emperor, who leads the Royal House of Charanêt-Boisgefelon, was also president before the empire took place (in a similar fashion than Napoleon 3, minus the self-coup). Therefore, he may have reigned for 5 years, he has ruled for 18 (yes, 12 years as president, 3 mandates.)

[The Frozen Forest]

The Bjorks have reigned for around a thousand years, there hasn't been any other Kings as the Bjorks have reigned at least since the founding of the nation, and existed before the founding.

[Glaristant]

The House of Arnheim has ruled Glaristant since its founding in 1460, meaning they have ruled the nation for the better part of six and half centuries.

[Themyscia]

Since the Amazons were still just a single island and the first Queen Otrera. The royal family just calls upon the goddess' to grant them a new daughter and their legacy carries on.

[Yogluwia]

The house of Ozmayinzgi has ruled Yogluwia since 1399, when The kniazate of Ozma, allied with the house of Kabegis by marriage and joining their houses, Defeated the Polish-allied Gedyencig and Riga Kniazates in the Yogluwian Wars of unification.

[Luziyca]

The Rwizikuran royal family has reigned since 1964, when Izibongo Ngonidzashe, the second President of Rwizikuru reached his two-term limit and decided "to hell with the constitution," and declared himself King (Mambo in weRwizi). His son, Kupakwashe has reigned since his father's death in 1979.

[Izvbard]

The Valerian-Arvina dynasty lasted from 647 to 1647 AU. Making the dynasty lasting for a 1,000 years. Now, a distant relative of the deposed line, Chancellor Dalrink Talwrin reigns, but in a elected, democratic way. His title of “Prince” is not recognized by Article 5c of the Constitution, which does not recognize any monarch’s titles other than a foreign ones’s. Thus, the monarchy is quite dead in Izvbard.

[Aviz Portugal]

Having since been established on 1385 under John I of Portugal, the House of Aviz had came to ruled once, aside from Portugal which included Spain, France, Philippines, Mexico and the South American countries.Now, the House of Aviz currently rules in 3 countries which includes Portugal, Spain and France.
Date of Establishment/Period of Rule:
-House Of Aviz(Portugal)=634 years
-House Of Trastamara(Spanish Branch)=653 years
-House Of Navarre(French Branch)=312 years

[The Spanish Realms]

Ever since the victory of the Spanish Succession War in 1715, the Bourbon family has been the ruling family in Spain.

[Harmonic Empire]

The House of Raymryt has ruled Imperial Harmonia since the beginning of the Third Empire Era, 1503 AC (600 years)

[Chadtonia]

While Chadtonian Presidents are elected by the populace, constitutionally they obtain royal rights and privileges under the pretense of "Emperor-In-Effect", meaning they are considered legal status of Emperor privileges and rights until or unless an Emperor takes seat according to a special privilege clause wherein a designated survivor would become an actual Emperor.

If this doesn't answer the question exactly telegram me, so I can amend it to your concern.

[Arillia]

The house of Duval has reigned since 1902. The current year is 2509, meaning that the house of Duval has reigned for over 600 years straight. The current emperor is Soniya li Duval, who has reigned for 60 years.

[Hohenzollern Empire-Kingdom of America]

The House of Hohenzollern-Amerika(Which in its self is a cadet branch of the Prussian Hohenzollerns) has ruled the Empire and Kingdoms of the United States of America since 1784. It is currently 2019 and the house has reigned for over 235 years.

[Corunia and Mironor]

The House of Theissen-Brunswick has reigned since 1864, or approximately 155 years, although they can trace their ancestry all the way back to the post-Roman Kings of the Sylvans who began ruling over what is now Corunia around 377 AD. Additionally, the Theissen-Brunswicks can trace their ancestry to the Viking conquerors who established Mironor around 929 AD

[White Sun]

The Royal House of the White Sun Empire has ruled the empire since the 7th century BCE according to tradition.

[Qara-Tumen Khanate]

The House of Jiradai has reigned for 40 years, beginning in 1979 with the end of the Anarchy and the establishment of the Qara-Tumen Khanate.

[Natishna]

The House of Weißkreuze has reigned in Natishna since our nation's founding in the year 1273, a total of 746 years.

[Great Robertia]

The Imperial House of Orsain has ruled Great Robertia since its unification in 1888, so currently it has reigned for 131 years.

[American Princedoms]

The line of Jefferson has reigned since the year 1800, when Thomas Jefferson took the throne following George Washington's death in late 1799, and was replaced as Prince of Virginia by James Madison.

[Routcher]

The House of Routch has been involved in Routcherian history since before our first king, Gregory the Unifier, consolidated the tribes of Routcheart, Seawall, and Cornbody in 1075AD.

However, not all of Routcherian history is dominated by the House of Routch, as the dynasty was usurped and reinstated twice. Thus the current Royal Dynasty is the 3rd Routch Dynasty.

[Nagatar Karumuttu Chettiar]

The Royal Line of Divine Emperor has been in power for over twelve-thousand five-hundred (12,500) years, and only grown more powerful since it took power through a Union with another Kingdom.

[The Union of British North America]

The House of Wessex, itself a cadet branch of Saxe-Coburg and Gotha, and in turn a branch of the House of Wettin, has reigned since 1901, for the NAU.

[Shalotte]

In its early history, the major clans of Shalotte were frequently at war with one another. Though often small in scale and not necessarily lasting for more than a year, these conflicts were nevertheless frequent, and are now known collectively as the Clan Wars of 650 B.C. to 100 A.D. The last such conflict was won by Clan Selgovae, before they were finally ended by the Shalotte Unification of 109 A.D. The monarchical title of Domnaeni was produced by this unification.

Clan Selgovae, as the largest and wealthiest of the major Shalotte clans (both then and now), and the ultimate victor of the final clan war, was given the task of leading the new country. The lines of succession for both Clan Selgovae's matriarchs and the Domnaeni became intertwined, and the clan's matriarchs have held the title since its creation in 109 A.D. uninterrupted until the present day.