House of Giusti
| House of Giusti Casa de Giusti | |
|---|---|
| Royal house | |
 Deo Juvante | |
| Country | Monsa |
| Place of origin | Monsa and Empire of Exponent |
| Founded | 1340 |
| Founder | Augustus Giusti |
| Current head | Letizia Giusti of Monsa |
| Titles | Titles of the House of Giusti
|
| Style(s) | His/Her Serene Highness |
| Motto | Deo Juvante (With God's Help) |
| Estate(s) | Prince's Palace of Monsa |
The House of Giusti (Spanish: Casa de Giusti) is an Astyrian royal house of Monsan and Exponential origin that has ruled the Principality of Monsa, with brief interruptions, since 1340. Its origins can be traced back to an Exponential noble merchant family, which settled west from the coast of Cassonne and gradually conquered the land in which today is Monsa.
Although there are records of the activity of the Giusti family in Exponent as a noble family that can confirm their existence since the 13th century, the family surged as a royal dynasty only after arriving to Teudallum and with the proclamation of Augustus Giusti as Prince of Monsa approximately in 1340. With a strong Catholic past, religion played a major role during most of the 13th and 14th centuries, in which under the reign of the Catholic Monarchs (Reyes Católicos), and specially Felipe II of Monsa and Joanna of Monsa, the faith consolidated a special place in the society and life of the dynasty; it was also during this time, when the family led the several campaigns of the Principality during which religion, language and power were spread through battles and the conquest of territories. The relation between the Giustis and the Court of Exponent was debilitated after the Battle of Monsa, which meant the first clash between Cadenzans and Exponentials in Monsan territory, a year later after the Battle the Giusti dynasty, under the [] reign, decided to stop paying tribute to the Imperial Crown, causing a crisis that ended in the Exponential Occupation of Monsa, the retire of the dynasty to the island of St. Barth and the later Siege of St. Barthélemy. Diana Carolina, Countess of Monte Carlo and Princess of the Principality, was the first member of the Giusti dynasty to succeed the Imperial throne and become Empress of Exponent between 1667 and 1702, her reign marked the end of the Siege and the return of the family to Monsa.
The family is today one of the dynasties which have ruled during more time a sovereign state of Astyria and throughout its history, Giustis members have been linked to several other royal houses in the region, including the House Palægos in Trellin and Exponentia in Exponent.