I have stumbled on the Vickroy site by accident and find this information most interest.
My father was born in SS Cosma e Damiano, near Formia and Gaeta which are situated sme 70 miles south of Rome. Two families named Viccari lived there but they were only distantly related.
The use of the two 'c's' in the Viccari name distinguishes it from the more frequently found Vicari, which in English means "Vicars" and is said to have originated in Switzerland.
Genealogical information on Viccari in Italy is sparse
In my visits to Italy, I have searched for the name Viccari in the telephone books of 20 or more cities and found few.
A catchpenny genealogicalproject originatingin Australia some years ago turned up very few names in Italy itself -- a total of only 81, but this volume was obviously researched by checking telephone and street directories as evidenced by the fact that my late cousin Peter Viccari who had two addresses in Washington, Conectucutt was listed twice and similarly Mrs. Margaret Viccari of Toronto was listed at her home in the city and her country home in Beaverton, Ontario!
Since the Norman invasion of Southern Italy began at the beginnig of the 11th Century and the invasion of England began in the same century, it is totally credible to me that the name Viccari orignated in Normandy.
Until discovering the Vickroy home page I was not even aware of the existence of the name Vickroy. Having checked the Toronto directory, I find no listingof the name, nor do I recall having heard of it in England.
Siince we obviously all spring from the same roots, I salute the Vickroys of the United States.