Celia Levetus also known as C. A. Nicholson and Diana Forbes (1874-1936) was a Canadian-English author, poet and illustrator of the Birmingham School.

In 1878 the Levetus family moved back to England, first living in London and then in Edgbaston.

[1] Influenced by Crane as well as William Morris,[2] Levetus became associated with the Birmingham school of illustrators.

[1] She also illustrated Verse Fancies, a volume of poems published by her brother, Edward Lewis Levetus, in 1897; a miniature edition of William Blake's Songs of Innocence (Wells Gardner & Company, 1899); and a full-sized edition of his Songs of Experience (1902).

She wrote several novels and a volume of poetry (The Comfort-Lady and Other Poems, 1911) under the pen names C. A. Nicholson and Diana Forbes.