[7] Willy was friendly with Hermann Göring and Heinrich Himmler[8][9] and arrested by the American military after the war but finally declared a follower and released.

In 1956, Sachs married firstly to Anne-Marie Faure (1934–1958), originally from Paris, France, who died shortly after the marriage from anesthesia failure after a car crash.

[13][14] They had one son together; After the death of his first wife, Sachs courted Brigitte Bardot, by flying over her villa on the French Riviera in a helicopter and dropping hundreds of roses.

[13] On 26 November 1969, Sachs married the former Swedish model Mirja Larsson (born 1943), in a civil ceremony in St. Moritz, Switzerland.

(which some have speculated to be Alzheimer's[20]) adding that "The loss of mental control over my life was an undignified condition, which I decided to counter decisively".

[citation needed] Sachs' extensive art collection included works by Jean Fautrier, Andy Warhol, René Magritte, Salvador Dalí, Roy Lichtenstein, Tom Wesselmann, Mel Ramos, and Allen Jones.

He also owned important pieces from the Nouveau réalisme school including Yves Klein, Jean Tinguely, Arman, and Martial Raysse.

[22] Many of these artists were involved in the 1969 design of the legendary pop-art-apartment in the tower of the Palace Hotel in St. Moritz, which quickly gained the art world's attention.

The proceeds from the sale of his photographs and illustrated books went into the Mirja Sachs Foundation, which helps children in need.