Eva Joly is a Norwegian

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

-born French

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...

 magistrate («Juge d'instruction»)

Examining magistrate

In an inquisitorial system of law the examining magistrate or investigating magistrate is a judge who carries out investigations into cases and arranges prosecutions....

 and politician

Politician

A politician, political leader, or political figure is an individual who is involved in influencing public policy and decision making...

 for the French Green Party.
Born in Grünerløkka

Grünerløkka

Grünerløkka is a borough of the city of Oslo, Norway. Grünerløkka became part of the city of Oslo in 1858.Grünerløkka was named after Friedrich Grüner who bought a mill in the area from king Christian V of Denmark in 1672 . During the 19th century, Grünerløkka became a working class area...

, Oslo

Oslo

Oslo is a municipality, as well as the capital and most populous city in Norway. As a municipality , it was established on 1 January 1838. Founded around 1048 by King Harald III of Norway, the city was largely destroyed by fire in 1624. The city was moved under the reign of Denmark–Norway's King...

, she moved to Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

 at 20 to work as an au pair

Au pair

An au pair is a domestic assistant from a foreign country working for, and living as part of, a host family. Typically, au pairs take on a share of the family's responsibility for childcare as well as some housework, and receive a small monetary allowance for personal use...

. There, against the will of the parents, she married the son of the family that employed her, Pascal Joly (now deceased) and adopted her middle name 'Eva' as it was easier to pronounce in French.
Working as a secretary, she took her legal education at night school and became a magistrate when she was 38.