Great grandparents imigrated during 1890-1910 from village named "Sambuca" located in central part of Sicily. Family name may have been listed as Connova.
There is the town of Sambuca di Sicilia in Agrigento Province. Prior to 1923 the town was called Sambuca Zabut.
SAMBUCA DI SICILIA - Agrigento Province, Sicily Region - 90 km from Agrigento - population: about 7195 with a total of about 7434 in the area - postal code: 92017 - telephone code: 0925 - patron saint: S. Giorgio and Maria SS Udienza - hamlets: Adragna
My reference book is "Annuario generale, comuni e frazioni d'Italia". Milano: 1994 Touring Club Italiano, 1968 and published every 5 years thereafter.