The screenplay by Ray Harris and Humphrey Pearson is based on the book of the 1922 stage musical The Lady in Ermine by Frederick Lonsdale and Cyrus Wood, which had been adapted from the operetta Die Frau im Hermelin by Rudolph Schanzer and Ernst Welisch.
He also began to write straight comedies, and his plays included Aren't We All? (1923), Spring Cleaning (1925), The Last of Mrs. Cheyney (1925, which ran for 514 performances), On Approval (1927), Canaries Sometimes Sing (1929) and Let Them Eat Cake (aka Half a loaf) among others.
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His last play, The Way Things Go, was written in 1949, more than 40 years after his first stage work and five years before his death (in London) from a heart attack.
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He also wrote the successful original book to the Parisian tale of The Street Singer for Phyllis Dare (1924) and Lady Mary (1928).
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In the 1920s, the now mature Wallis began to play character parts, appearing with great success as Louis XV in Madame Pompadour (1923) by Leo Fall, Frederick Lonsdale and Harry Graham, starring with Evelyn Laye and Derek Oldham.
King of Cadonia is an English musical in two acts with a book by Frederick Lonsdale, lyrics by Adrian Ross and Arthur Wimperis and music by Sidney Jones and Frederick Rosse.
The Lady of Scandal is a 1930 American film directed by Sidney Franklin based on a play by Frederick Lonsdale and starring Ruth Chatterton, Basil Rathbone and Ralph Forbes.