Sergente Maggiore[1] Guglielmo Fornagiari was an Italian World War I flying ace credited with six aerial victories.
[2] Guglielmo Fornagiari was born in Lizzano in Belvedere, Kingdom of Italy, in 1892.
[3] His life and military career are unknown before he was posted to a fighter squadron, 78a Squadriglia, on 3 September 1916.
Despite this, he continued to fly and fight, and scored his first accredited aerial victory on 22 August 1917.
Fornagiari continued to score; on 26 December, he would share two victories, one with Masiero, for his fifth and sixth claims.