Based on the provided source material, Orsenigo is primarily identified as an Italian surname rather than a city. The name is associated with several notable historical figures in Italy, including individuals from various professional backgrounds such as diplomacy, religion, architecture, and literature.
Notable people bearing the surname include Cesare Orsenigo (1873–1946), who served as a Vatican diplomat, and Giovanni Battista Orsenigo (1837–1904), an Italian monk and dentist. Other figures associated with the name are Simone da Orsenigo, an Italian architect, and Vittorio Orsenigo, an Italian short story writer, novelist, and theatre director.