| Birth Name: | Isabelle Émilie de Tessier |
| Birth Date: | 25 September 1847 |
| Birth Place: | Islington, London, England |
| Death Date: | 11 June 1890 |
| Death Place: | London, England |
| Nationality: | British |
| Cartoonist: | y |
| Notable Works: | Ally Sloper |
| Alias: | Princess Hesse Schwartzbourg, Ambrose Clarke, Noir |
| Spouse: | Charles Henry Ross |
Isabelle Émilie de Tessier (25 September 1847 – 11 June 1890),[1] who worked under the pseudonyms Marie Duval and Ambrose Clarke, was a British cartoonist, known as co-creator of the seminal cartoon character Ally Sloper,[2] [3] [4] [5] the popular character was spun off into his own comic, Ally Sloper's Half Holiday, in 1884.[6]
Isabella Emily Louisa Tessier was born in Marylebone, London on 25 September 1847 to parents of French descent. She initially became a governess but left to become an actor.
Her first known appearance on stage was at the St James's Theatre in 1868 when she was in a pantomime. She adopted the stage name Marie Duval, and appeared in plays written by Charles Henry Ross.
In 1869 joined three other women cartoonists contributing to the British satirical magazine Judy, edited by Ross, signing her work as Marie Duval. She also provided illustrations to Ross's 1869 novel The Story of a Honeymoon, using the pseudonym Ambrose Clarke.
The Ally Sloper character had been created for Judy by Ross in 1867 but by 1869, the strips were signed by Duval and Ross before Duval became the main artist on the strip. In 1884, when the Ally Sloper character was given his own magazine, Duval's comic strips were reprinted without her signature.[7]
She contributed to Judy until 1885, and was at times generating over 100 contributions to the magazine each year. This included spot illustrations, cartoons and full-page comic strips. Her work also appeared in British penny papers and comics from the 1860s to the 1880s.[7]
Duval was the author of Queens and Kings and Other Things (1874), a collection of illustrated nonsense verse published under the pseudonym of "S. A. the Princess Hesse Schwartzbourg". She also co-wrote Rattletrap Rhymes and Tootletum Tales: a Big Book for Babies (1876) with Ross, using the pseudonym Ambrose Clarke.
In 1871, Duval had an affair with Herbert Augustus Such, and was a correspondent in the high profile divorce case brought by his wife in 1873.
In 1874, Duval had a child with Charles Henry Ross, and the family lived in Battersea. She adopted the name Ross but there are no records of a marriage.
Duval died of bronchitis, pneumonia and nephritis on 11 June 1890 in Clapham. She was buried in Wandsworth cemetery as Isabella E Ross.