Little king or child of the small king
A modern American spelling variant of the Irish surname Reagan. It is derived from the Gaelic name RiagΓ‘n, which combines the word for king with a diminutive suffix.
Less common today
Raeghan isn't in the latest US Top 1000. It last peaked at #4,058 in 2016.
US births per 5-year period, 1990βpresent (SSA data).