Rio Family History
Rio Name Meaning
Spanish (Río) Portuguese and Italian: from río rio ‘river brook’ (from Latin rivus) applied either as a topographic name or as a habitational name from a place called with this word. Compare Del Rio . Breton (mainly Morbihan): variant of Riou from the old Breton personal name Riou a diminutive of ri ‘king’; or in some cases perhaps an ironic nickname derived from the same word. Compare Rioux . French (southern): variant of Rioux .
Source: Dictionary of American Family Names 2nd edition, 2022