Ricky

Etymology tree
Proto-Indo-European *h₃reǵ-
Proto-Indo-European *-s
Proto-Indo-European *h₃rḗǵs
Proto-Celtic *rīxsbor.
Proto-Germanic *rīks
Proto-West Germanic *rīk
Proto-Indo-European *kret-der.?
Proto-Germanic *harduz
Proto-Germanic *-jaz
Proto-West Germanic *-ī
Proto-West Germanic *hardu
Proto-West Germanic *Rīkuhardu
Old High German Rihhart
Middle High German Rihardbor.
Medieval Latin Richardusder.
Old French Richardbor.
Middle English Rycharde
English Richardder.
English Rick
English -y
English Ricky
From Rick + -y.