Susan, Just came across your mail. I was in Malta in 1998 and was surprised to find Riolo's everywhere. I met with a radio and television personality, did local soaps on TV, an entertainer, actor, etc. We had drinks and dinner, a very nice fellow in his 60's.
My research has Riolo's in Albania, Calabria, Italy and Sicily. The US Riolo's appear to be Calabrian and Sicilian, through Brooklyn, Long Island, Utica New York and the fanning out across the US. The California Riolo's appear to be my step cousins as we share the same Great Grandfather.
Didn't know there was a UK connection, but welcome.