Roncagli was the hydrographer for the Italian expedition to explore Patagonia and Tierra del Fuego of 1881–1882, led by Giacomo Bove.
In 1882, he participated with the "Cape Horn" in the scientific expedition to southern Patagonia of the Italian sailor Giacomo Bove.
Giacomo Puccini | Giacomo Casanova | Giacomo Meyerbeer | Giacomo Manzù | Giacomo Balla | Giacomo Agostini | Giacomo Quarenghi | Giacomo Leopardi | Carol Bove | Salvatore Di Giacomo | Laura San Giacomo | Giacomo Matteotti | Giacomo Leoni | Giacomo Manzoni | San Giacomo | Joseph Bové | José Bové | Giovanni Giacomo Gastoldi | Gian Giacomo Medici | Giacomo Losi | Giacomo Finetti | Giacomo Facco | Giacomo Bulgarelli | Giacomo Bove | Giacomo | Aldo, Giovanni & Giacomo | San Giacomo Filippo | Paul Bové | Linda Bove | Giuseppe Giacomo Gambino |