Ulric de Fonvielle, brother of Wilfrid de Fonvielle, (11 February 1833, Paris – 1 July 1911, Paris[1]) was a 19th-century French journalist and writer.

After studying painting,[2] he took part as a volunteer to the expedition of the Thousand in 1860[3] then, as a reporter, to the American Civil War.

[4] Chief editor of La Ligne Directe in Dieppe (1868), he actively participated to the campaign against the Empire led by La Marseillaise of Henri Rochefort.

[5] On January 10, 1870, he was chosen as a witness by their colleague Paschal Grousset for Victor Noir to attend the duel between Noir and Prince Pierre Bonaparte and accused the Prince of attempted murder on his person after the death of Victor Noir: Assassin, dare to face me!

[6] He then got ten days in jail for insulting the Court.