Rilley, a unisex given name chiefly employed within Anglo-American onomastic tradition, represents a contemporary orthographic variant of Riley, itself rooted in the Old Irish personal name Rioghbháil—literally “valiant” or “courageous”—and the Old English toponym ryge leah, denoting a “rye clearing.” Phonetically rendered as /ˈrɪli/, this appellation has exhibited a consistent yet modest profile in the United States from 2000 through 2012, with annual occurrences ranging from five to nine and Social Security rankings persistently positioned in the eight-hundreds. Such statistical regularity, together with the name’s intrinsic associations of steadfastness and historical resonance, elucidates its appeal to parents seeking substantive neutrality and a measured nod to both Gaelic and Anglo-Saxon heritage.