Geneviève Dieudonné is a character appearing in a number of works by Kim Newman.
According to Newman, there are three versions of Geneviève, one for each series (Warhammer Fantasy, Anno Dracula, and the Diogenes Club series). Each has a different middle name but each is a "trans-continual cousin". All of them share a number of similar features, however: she is a beautiful blonde female vampire from Brittany (or its otherworldly equivalent), turned by the vampire elder Chandagnac when she was 16. Although she is around 400 years old by the time the stories with her are set, she still resembles a 16-year-old girl. According to Newman, her first name comes from a woman he once knew, while her last name comes from Albert Dieudonné.
Genevieve Sandrine du Pointe du Lac Dieudonné originally appeared in the 1989 Warhammer Fantasy novel Drachenfels, written under Newman's pen name Jack Yeovil. She later appeared in the novel Beasts in Velvet, several short stories collected in Genevieve Undead and Silver Nails, and the complete collection, The Vampire Genevieve. According to Newman, "the reason she doesn't have an accent on her name in GW books is that word-processing/printing techniques were so primitive back then that putting in accents was a major pain and used only on special occasions, like when listing her last name, Dieudonné."
In the fictional setting of Warhammer Fantasy, Geneviève was born in Bretonnia in the year 1839 of the Imperial Calendar. She was given the Dark Kiss by Chandagnac in 1855, and traveled with him for some time. Their destinations included the Empire, Cathay (where she studied magic and martial arts), and Araby (where she was a slave). After Chandagnac's death, she worked at a vampire tavern for a century, before joining a band of adventurers. During this time and afterward, she became a mercenary, spy, a convent-dweller, an actress (for a single show) playing herself, a wanderer, and an assassin. After foiling a plot to start a war between vampires and humans, she settled down and married her lover, the playwright Detlef Sierck.