Mariana Koskull
Overview
 
Henrietta Mariana Charlotta Koskull (1785–1841) was a Swedish noble and lady-in-waiting
Lady-in-waiting
A lady-in-waiting is a female personal assistant at a royal court, attending on a queen, a princess, or a high-ranking noblewoman. Historically, in Europe a lady-in-waiting was often a noblewoman from a family highly thought of in good society, but was of lower rank than the woman on whom she...

, known as the royal mistress of King Charles XIII of Sweden
Charles XIII of Sweden
Charles XIII & II also Carl, , was King of Sweden from 1809 and King of Norway from 1814 until his death...

 and King Charles XIV John of Sweden
Charles XIV John of Sweden
Charles XIV & III John, also Carl John, Swedish and Norwegian: Karl Johan was King of Sweden and King of Norway from 1818 until his death...

.

Mariana, or Marianne as she was often called at the French-influenced court, was born as the child of Gustaf Fredrik Koskull and Anna Charlotta Gjelstrup. She was appointed lady-in-waiting
Lady-in-waiting
A lady-in-waiting is a female personal assistant at a royal court, attending on a queen, a princess, or a high-ranking noblewoman. Historically, in Europe a lady-in-waiting was often a noblewoman from a family highly thought of in good society, but was of lower rank than the woman on whom she...

 to Hedwig Elizabeth Charlotte of Holstein-Gottorp and became a center in the social circles of the court, where she was admired for her musicality (she was a good Harp
Harp
The harp is a multi-stringed instrument which has the plane of its strings positioned perpendicularly to the soundboard. Organologically, it is in the general category of chordophones and has its own sub category . All harps have a neck, resonator and strings...

player), and often played the main part in the amateur theatre
Amateur theatre
Amateur theatre is theatre performed by amateur actors. These actors are not typically members of Actors' Equity groups or Actors' Unions as these organizations exist to protect the professional industry and therefore discourage their members from appearing with companies which are not a signatory...

 at court.

She was pointed out and known as the mistress of King Charles XIII after his accession to the throne in 1809, and eventually as the mistress also to his successor King Charles Bernadotte (crowned 1818), with whom she was said to have had a child.
 
x
OK