The name Abernathie is a variant form of Abernethy.
See also the related category river.
Abernethy is not popular as a baby name for boys. It is not in the top 1000 names.
A baby name that sounds like Abernethy is the name Abernathie.
† English pronunciation for Abernethy: AE as in "at (AE.T)" ; B as in "be (B.IY)" ; ER as in "hurt (HH.ER.T)" ; N as in "knee (N.IY)" ; EH as in "ebb (EH.B)" ; TH as in "theme (TH.IY.M)" ; IY as in "eat (IY.T)"