Jeanne Leocadie de Tramcourt (9 December 1875, Tracy sur Loire, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 - 2 January 1952 in Stjärnhov

Stjärnhov

Stjärnhov is a locality situated in Gnesta Municipality, Södermanland County, Sweden with 588 inhabitants in 2005....

, Södermanland

Södermanland

', sometimes referred to under its Latin form Sudermannia or Sudermania, is a historical province or landskap on the south eastern coast of Sweden. It borders Östergötland, Närke, Västmanland and Uppland. It is also bounded by lake Mälaren and the Baltic sea.In Swedish, the province name is...

) was the French long term girlfriend of Prince Wilhelm of Sweden

Prince Wilhelm, Duke of Södermanland

Prince Wilhelm of Sweden and Norway, Carl Wilhelm Ludvig , Duke of Södermanland, was the second son of King Gustav V of Sweden and his Queen consort Victoria of Baden.-Biography:...

. The couple had a relationship from 1914 until 1952.

Tramcourt married the Swedish sculptor Christian Eriksson in 1894 and divorced him in 1911, and was during her marriage well known within Swedish art circles. Her relationship to prince Wilhelm started in 1914 and lasted until her death, and their relationship is described as a happy one. The couple never married, but lived together on Stenhammar Castle

Stenhammar Castle

Stenhammar is a royal castle in Sweden.It is situated outside the town of Flen in Södermanland about 120 kilometers south of Stockholm and is the summer residence of the Swedish king....

; from 1932, she was called his "hostess" and their relationship was privately recognized, though never officially, and she was never seen in public.

Jeanne de Tramcourt died in a car accident as a passenger while Wilhelm was driving.