PARIS (AFP) – The descendants of heiress and art collector Peggy Guggenheim lost their case in a French court Wednesday over her extensive collection of works housed in an 18th century palace on Venice’s Grand Canal.

The French branch of the family launched legal action against the New York-based Solomon Guggenheim Foundation, which manages the collection.

The relatives are angry at the way the collection of paintings by artists including Picasso, Miro and Matisse are displayed and have called for it to be restored to its original configuration.

One of Peggy’s grandsons, Sandro Rumney, and other family members complain that works from other collectors are now being displayed at the Palazzo, diluting the quality of the collection.

In the original hearing in May, lawyer Olivier Morice said the family felt moved to take the action “to respect the wishes of Peggy Guggenheim to see the collection intact.”

But the Court of Appeal in Paris rejected the family members’ case and ordered them to pay 30,000 euros ($33,500) in legal costs.

Peggy Guggenheim built up the collection with the enormous wealth she inherited at the age of 13 when her metal tycoon father Benjamin went down on the Titanic.

In the 1920s she became friends with many of the artists whose works are in her collection. She died in 1979 at the age of 81.