Francesco Daverio Francesco Daverio ( Varese , April 3 , 1815 - Rome , June 3 , 1849 ) was a patriot of the Italian unification , Chief of Staff of the Roman Republic , and an engineer . He died on the Janiculum defending the " Casino dei quattro venti " . Daverio took part in the Five Days of Milan in March 1848 . In August 1848 , he was sent by Giuseppe Mazzini to guide Giuseppe Garibaldi in the campaign in Varese . He fought in Luino and Morazzone in 1848 . In 1849 he fought in Velletri and defended the Roman Republic . He died June 3 , 1849 , under French fire , on the Janiculum . Early years . Daverio was born in Varese on April 3 , 1815 , to the wealthy farmer Giovan Battista , and his wife , Maria Cerutti . He completed his pre - college studies in Parabiago and Varese . He graduated on January 4 , 1839 , from the University of Pavia with a degree in Engineering and Architecture . He worked as an engineer at the Ponti engineering studio in Varese and at the prestigious Gerli engineering studio in Milan . He also was the director and superintendent of the assets of the noble Della Sala family of Varese . He worked for Ospedale Maggiore in Milan , where he also participated in the Five Days of Milan . With Garibaldi . Daverio ' s first meeting with Garibaldi took place on August 13 , 1848 , at Castelletto sopra Ticino . Garibaldi , who had arrived a few months before via Nice and Uruguay , had started the Provisional Government of Lombardy , gathering 1300 volunteers to start an uprising in Varese . On August 9 , 1848 , Austria and Piedmont had signed the Salasco Armistice , which Garibaldi found unacceptable . Garibaldi was waiting for aid from Switzerland ; Mazzini had promised him guns and 180 men . Only Daverio , the 33 - year old engineer from Varese , had arrived . Mazzini had sent him as a guide . The small army marched during the night from Castelletto sopra Ticino to Arona . Garibaldi seized the steamboats " San Carlo " and " Verbano " in the port , which had been used by the postal service on the lake . They also seized nine other boats on the lake . They lade small pieces of artillery , 1 , 286 rations of bread and twenty bags of rice and landed in Luino at eight o ' clock in the evening of August 14 with 800 men . The campaign lasted fifteen days and , after the riots of Luino on August 15 and Morazzone on the 26th , revolution was in the air . Of the 800 men who had gone with him , only seventy followed Garibaldi to Switzerland . Daverio proved invaluable in guiding the retreat of the forces through the Campo dei Fiori in Brusimpiano , past the shores of Lake Lugano , and out of the country . With a long trip past Buguggiate , Capolago , Varese , Morosolo , Casciago , Velate , St . Ambrose , Bregazzana , the German Alps , and Borgnana Cavagna , the patrol arrived in the late evening of August 27 at Casamora , an isolated area between Brusimpiano and Porto . A plaque is still visible from the road along the lake showing the house Garibaldi , exhausted from the long march , slept in . The next night , Brusimpianesi barges carried a troop thinned to about thirty volunteers , defying the Austrian gunboat patrols . Garibaldi went to Agno and then Lugano . Those who had lost him would eventually reach Switzerland in small groups . Garibaldi ' s volunteers were not yet ready to take Italy . In Lugano , Daverio wasted no time and got back in touch with his contacts from the uprising in Lombardy . After the riots erupted in the fall in Val d ' Intelvi , he left Locarno on October 31 . In the evening , he landed in Germignaga , on the Lombardy side of Lake Maggiore , where it reaches Luino . He was greeted by the " giunta nazionale d ’ insurrezione . " Two Austrian columns rushed from Varese , the uprising failed , and Daverio retreated on the lake from which he came , this time destined for Piedmont . 1849 and death . Six months later , he reappeared in Velletri . He died with weapons in hand on June 3 , 1849 defending Rome at the " Casino dei quattro venti " . Almost at the same time , another Varese Enrico Dandolo died at the Palazzo Corsini . Another young patriot and Varese native , Emilio Morosini , would also die on the Janiculum in June . Legacy . The Varese technical institute for surveyors is named after him . There are streets named after him in Rome , Varese , and Milan .