Delacour is the surname of a French wizarding family. Recent generations of Delacours have Veela heritage, as Monsieur Delacour married half-Veela witch Apolline Delacour. They are related to the pure-blood Weasley family of wizarding Britain.
|Apolline Delacour||the daughter of a wizard and a Veela; married Monsieur Delacour and had two daughters, Fleur and Gabrielle|
|Monsieur Delacour||a French wizard married to Apolline, father of Fleur and Gabrielle|
|Fleur Delacour||a quarter-Veela witch, Triwizard Champion for Beauxbatons Academy of Magic in 1994-1995, and wife of Bill Weasley, with whom she had three children, Victoire, Dominique and Louis Weasley.|
|Gabrielle Delacour||a quarter-Veela witch, younger sister of Fleur|
Monsieur Delacour ┬ Apolline Delacour │ (see Weasley Family Tree) ┌───────┴────────┐ │ │ │ Bill Weasley ┬ Fleur Delacour Gabrielle Delacour │ ┌─────┴───────────┬──────────────┐ │ │ │ Victoire Weasley Dominique Weasley Louis Weasley
In French, de la cour means "of the court".