Riolo Family History
Riolo Name Meaning
Italian (southern):: habitational name from any of various places called with Riolo or Riola such as Riolo in Modena Riolo Terme in Ravenna and Riola in Bologna or from a shortened form of Oriolo the name of a place in Cosenza province. possibly a diminutive of Rio
Source: Dictionary of American Family Names 2nd edition, 2022