Dorothy Delius Allan Black was born on 1890 in Bradford, Yorkshire, England, UK. She married in 1916 with Hugh MacLeish.She started to write very young, and had published novels since 1916. She used her maiden name Dorothy Black and the male pseudonym, Peter Delius. At first, she wrote diferent tipes of books, includes poetry and childrens fiction, before center in romance fiction.
She travelled widely as inspiration for her books set in diferent parts of the world. In 1943 published anonymously Letters of an Indian judge to an English gentlewoman, later reedited under her name. During the summer of 1949, she assisted the writer Marion Crawford, who was writing a series of features on life with Princess Margaret.
In 1960, Dorothy wrote her auto-biography The foot of the rainbow, center in her writing career. In total, she published over a hundred of novels and several short stories.Dorothy became a vice-president of the Romantic Novelists Association, along with the mediatic writer Barbara Cartland. She passed away in 1977 in Scotland, UK.