Félix Thyes is recognized as the first Luxembourg author

Author

An author is broadly defined as "the person who originates or gives existence to anything" and that authorship determines responsibility for what is created. Narrowly defined, an author is the originator of any written work.-Legal significance:...

 to write a novel in French. Marc Bruno, profil d'artiste was published shorty after his death in 1855. He was also the first literary historian to discuss literature written in Luxembourgish.

His novel

Marc Bruno: portrait d'un artiste is a psychological novel associating romanticism with realism. It is the story of an unfortunate medical student in Brussels who pays his way by painting pictures in the attic where he lives. He falls in love with an aristocratic girl but she soon leaves him for someone of her own class. Finally he finds a girl he dearly loved during his childhood only to discover she is now a prostitute and wants to have nothing more to do with him. One morning he finds her body on a dissection table at the university. He finally decides to devote himself fully to medical practice and ends up in a small village where he can immerse himself in his work. But he soon falls in love once more.

His essay

The Essai sur la Poésie luxembourgeoise was published in the Brussels Revue trimestrielle in 1854. In particular, Thyses commented positively and in some detail on Antoine Meyer

Antoine Meyer

Antoine Meyer, also known as Antun or Tun Meyer was a Luxembourg-born mathematician and poet who later adopted Belgian nationality...

's poetry as well as on the efforts of other Luxembourgers including Jacques Diedenhoven and Jean-François Gangler who wrote a number of works in Luxembourgish which were never published.