A mere two weeks later, with the car rebuilt, Georges Philippe finished a highly creditable fourth at the inaugural Grand Prix Automobile de Monaco, behind winner William Grover-Williams.

Continued improvement was finally rewarded when Georges Philippe won the Burgundy Grand Prix three weeks later, finishing ahead of Guy Bouriat [Wikidata] in a second Rothschild T35C.

A model and exotic dancer at the Casino de Paris, Helene Delangle regularly took to the track under her professional pseudonym Hellé Nice.

In 1935, Rothschild and his friend, Jean Rheims, who were sponsoring a bobsled team, refused to participate in the 1936 Winter Olympics at Garmisch-Partenkirchen, Germany, protesting what they called the "persecution of Germans of Jewish religion."

Despite the time spent racing automobiles and producing the 1932 film Lac aux dames, the first French "talkie" to gain international recognition (adapted from a novel by Vicki Baum and directed by Marc Allégret, it had a script by Colette and starred Jean-Pierre Aumont and Simone Simon), the energetic Philippe de Rothschild still devoted his energies and innovation to Château Mouton Rothschild in Pauillac.

Nonetheless, the Mouton vineyard was still rated as a "Second Growth" as a result of the Bordeaux Wine Official Classification of 1855 (reputedly due to the vintner's Anglo-Jewish heritage) and Philippe de Rothschild began a lifelong mission to change this judgment.

Rothschild's late-in-life memoirs (Milady Vine, written in collaboration with his companion, the British theatre director Joan Littlewood) describe a partnership of great passion but also enormous tempestuousness and despair.

Although he was called up to serve in the French Air Force, the quick fall of France resulted in de Rothschild being arrested in Algeria by the Vichy government and the vineyard property seized.

[3] On his return to France following the Allies' liberation, Philippe de Rothschild learned that, although his daughter was safe, the Gestapo had, on charges of attempting to cross a line of demarcation with a forged permit, deported his estranged wife in 1941 to Ravensbrück concentration camp where she died – the cause of her death remains unresolved – on 23 March 1945.

At the same time, the multi-talented Rothschild returned to participation in the theatrical world, teaming up with Gaston Bonheur to write in both English and French the play Lady Chatterley's Lover.

Philippe de Rothschild was an accomplished poet and in 1952 his poem Vendange inspired Darius Milhaud to write a three-act ballet for the Paris Opera.

In 1954, Rothschild married a longtime mistress, Pauline Fairfax Potter (1908–1976), a Paris-born American who had been the head fashion designer at Hattie Carnegie.

After their marriage, she used her aesthetic talents to help restore an old storage building on the estate, converting it into an opulent home, and became known as a tastemaker in the worlds of fashion and interior design.

Baron Philippe de Rothschild remained active in the wine business until he died in 1988 at the age of 85, whereupon his daughter assumed control of the company.

In 1946, this became a prominent and traditional part of the vineyard's image, with labels created by great painters and sculptors such as Jean Cocteau, Leonor Fini, Henry Moore, Marie Laurencin, Georges Braque, Salvador Dalí, Jacques Villon, Pierre Alechinsky, Joan Miró, Marc Chagall, Pablo Picasso, César, Jean-Paul Riopelle, Andy Warhol, and other notables.