Sonia, Duchess of Muskar

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Princess Sonia
Princess of the United Kingdom of Sildavia and Borduria
Duchess of Muskar
Baroness Ferreira
Baronetess Silva
Born21 September 1975 (1975-09-21) (age 48)
Barão de Cocais, Minas Gerais, Brazil
SpouseThe Hon. Dimas, 1st Baronet
Sonia Silva
HouseHouse of Sildavia
FatherBaron Joanico ✝
MotherDuchess Maria of Östervarstland

Princess Sonia (Sonia Ferreira, 21 September 1975), Duchess of Muskar, is a senior member of the Hergerian Royal Family, and also mother of the Queen Maria I and the Princess Gabriela.


She is the eldest daughter of the late Baron and the current Dowager Baroness Ferreira. Sonia was born in the city of Barão de Cocais, in the former residence of the Barons. In the late 1990s she met and married the Duke of Flaviano, and with him she had a daughter, Queen Maria I, who now occupies the Sildavian throne. The couple broke up shortly after the birth of the current queen. The countess also has two more children from previous relationships, Princess Gabriela and Prince Gabriel, who currently ranks as the first two in the line of succession to the Sildavian throne. In 2016 the countess remarried.

After her daughter's accession to the throne, she was given the title of Countess of Koniktz. Due to the death of her father the Baron Ferreira, in 2021, and in accordance with the law of absolute primogeniture of the nobility of Sildavia, she as eldest daughter inherited her father's Barony. After the Union between Sildavia and Borduria she was striped of her county and created Duchess of Muskar by the Queen.

Royal styles of
Sonia, Duchess of Muskar
Reference styleHer Royal Highness
Spoken styleYour Royal Highness
Alternative styleMa'am

Titles, styles and honours

  • 1975 - 1999: Miss Sonia Ferreira
  • 1999 - 2007: Her Serene Highness, the Duchess of Flaviano
  • 2007 - 2016: Mrs Sonia Ferreira
  • 2016 - 2020: Mrs Sonia Silva
  • 2020: Her Highness, the Princess Sonia of Sildavia
  • 2020–2023 Her Royal Highness, the Countess of Koniktz
    • In Borduria: Her Imperial and Royal Highness, the Grand Duchess Sonia of Borduria, Countess of Koniktz
  • 2023: Her Royal Highness Princess Sonia of Sildavia and Borduria
  • 2023–Present: Her Royal Highness The Duchess of Muskar

Full Title

Her Royal Highness, Princess Sonia of the United Kingdom of Sildavia and Borduria, Princess of Östervarstland, Duchess od Muskar, 2nd Baroness Ferreira, Baronetess Silva, Royal Lady of the Most Noble Order of the Black Pelican, Grand Cross of the Order of Ottokar, Grand Cross of the Order of the Royal House of Sildavia, Grand Cross of the Order of Klöw, Grand Cross of the Order of Sildavian Merit, Recipient of the Foundation Medal of Sildavia, Recipient of the Royal Family Order of Queen Maria.


National honours

Foreign honours


During her marriage to the Duke of Flaviano, Sonia was styled as "Her Serene Highness The Duchess of Flaviano". During her marriage, Sonia used the arms of the duke impaled (side by side) with those of her parents. Sonia's coat of arms before her marriage was based on the Mateus-Ferreira coat of arms. It depicted a lozenge shaped shield of arms, which symbolised her unmarried state. This version was used only before her marriage and is also applied by her sisters. Today, as holder of the status of "Royal Highness" and "Princess of Sildavia and Borduria" she uses the escutcheon of Sildavia together with those of her husband, 1st Baronet Silva.

File:Duchess of Muskar COA (2023).png
Full armorial of the Duchess
(as Royal Lady of the Order of the Black Pelican)

See also