Leonor is a variation (Portuguese and Spanish) of Eleanor (English).
Leonor is also a variation (Spanish) of Helen (English).
Leonor is also a variation of Lenore (English and Russian).
Leonor is rare as a baby girl name. At the modest peak of its usage in 1909, 0.008% of baby girls were named Leonor. It was #725 in rank then. The baby name has dropped in popularity since then, and is currently of only sporadic use. In 2018, out of the family of girl names directly related to Leonor, Eleanor was the most frequently used.
† approx English pronunciation for Leonor: L as in "lay (L.EY)" ; IY as in "eat (IY.T)" ; AH as in "mud (M.AH.D)" ; N as in "knee (N.IY)" ; ER as in "hurt (HH.ER.T)"