Oarsman or from Rheims
A modern spelling variant of Remy, which originates from the Latin name Remigius. It historically refers to an oarsman or a person from the French city of Rheims. The 'h' is a stylistic addition common in contemporary American naming trends.
Less common today
Rhemy isn't in the latest US Top 1000. It last peaked at #11,178 in 2011.
US births per 5-year period, 1990βpresent (SSA data).