Clementine de Vere (20 December 1888 – 31 March 1973), also known by her stage name Ionia, was the most influential female magician in the first half of the 20th century.
The family moved to Paris in 1892 where Charles de Vere opened another magic shop which he ran until about 1909, assisted by his sons.
Charles de Vère then gave up his business and retired to Rosny-sous-Bois, where he worked on the preparation of a big show for his daughter Clementine.
On 30 January 1911, she appeared on stage as "Ionia", later sometimes billed as "the Enchantress" or as the "Goddess of Mystery", in an act at the Birmingham Hippodrome in England, in a routine which required six tons of equipment and elaborate Egyptian costumes for Clementine and her male and female assistants.
Her last contemporary mention was apparently in the March 1911 issue of the magazine The Sphinx the cover of which showed a photograph de Vère.
"Ionia" was contracted to perform in America, but did not due to the sudden closing of Broadway's Folies Bergere of New York.
By 1914 Charles de Vere was disappointed that his daughter had not continued her elaborate act and tried to sell the tricks and pieces of equipment to curb the financial losses that had arisen for him.
Of the 22 known posters for "Ionia" produced by Moody Brothers of Birmingham, only eleven have survived[13] and are now considered expensive collectibles.