Jean-Marie-Mathias-Philippe-Auguste, comte de Villiers de l'Isle-Adam (7 November 1838 – 19 August 1889) was a French symbolist writer.
Villiers de l'Isle-Adam was born in Saint-Brieuc, Brittany, to a distinguished aristocratic family. His parents, Marquis Joseph-Toussaint and Marie-Francoise (née Le Nepvou de Carfort) were not rich, however, and were financially supported by Marie's aunt, Mademoiselle de Kerinou. His father became obsessed with the idea he could restore the family fortune by finding the lost treasure of the Knights of Malta (Philippe Villiers de L'Isle-Adam, 16th-century Grand Master of the Knights Hospitaller, was his ancestor), which had reputedly been buried near Quintin during the French Revolution. Consequently, he spent large sums of money buying land, excavating it and then selling it at a loss when he failed to find anything of value. The young Villiers' education was troubled (he attended over half a dozen different schools) but from an early age his family were convinced he was an artistic genius: as a child he composed poetry and music. The most important occurrence in these Breton years was probably the death of a young girl with whom Villiers was in love, an event which would deeply influence his literary imagination.
Villiers had made several trips to Paris in the late 1850s, where he became enamoured of artistic and theatrical life. In 1860, his aunt gave him enough money to allow him to live in the capital permanently. He had already acquired a reputation in literary circles for his inspired, alcohol-fuelled monologues. Villiers began living a Bohemian life, frequenting the Brasserie des Martyrs, where he met his idol Baudelaire, who encouraged him to read the works of Edgar Allan Poe. Poe and Baudelaire would become the biggest influences on Villiers' mature style, but his first publication (at his own expense), was a book of verse, Premières Poésies (1859). It made little impression outside Villiers' own small band of admirers. Around this time, Villiers began living with Louise Dyonnet, a woman whose reputation scandalised his family so much they made Villiers undergo a retreat at Solesmes Abbey. Villiers would remain a devout, if highly unorthodox, Catholic for the rest of his life.
Villiers finally broke with Dyonnet in 1864. His attempts at securing a suitable bride for himself would all end in failure. In 1867, he asked Théophile Gautier for the hand of his daughter Estelle, but Gautier — who had turned his back on the bohemian world of his youth and would not let his child marry a writer with few prospects — turned him down. Villiers' own family also strongly disapproved of the match. His plans for marriage to an English heiress, Anna Eyre Powell, were equally unsuccessful. Villiers finally took to living with Marie Dantine, the illiterate widow of a Belgian coachman. In 1881, she gave birth to Villiers' son, Victor (nicknamed "Totor").