Who worked as a candlemaker in Staten Island, commanded guerilla troops against Brazil as well as fought in defense of Uruguay, fought to help unify a European country, and refused a commision as a Major General in the Union Army offered by Abraham Lincon at the start of the US Civil War? He was also a US citizen.

Guiseppe Garibaldi?

Got it, Jenny!

Some information on Garibaldi
http://www.reformation.org/garibaldi.html
www.arcaini.com
http://www.roangelo.net/valente/outline.html

But his biscuit is unknown in Italy !Though made in his honour and symbolically containing what his army lived on, the Garibaldi biscuit was invented here for his visit to Britain and never made it back to Italy.(Well, once researched it seems a waste not to use this useful fact )