Delwin is not widely used as a baby name for girls. It is not in the top 1000 names. Delwin has also been used as a baby boy name.
Baby names that sound like Delwin include Delwyn (Welsh), Dalene (English), Daline (English), Dallin (English), Dallon, Daylan, Daylen, Daylin (English), Daylon, Daylyn (English), Delaine (English and French), Delane, Delayne (English), Deleine, Delma (English and Irish), Delmah, Delmi (English), Delmy (English), Delun, and Delwen (English and Welsh).
† English pronunciation for Delwin: D as in "day (D.EY)" ; EH as in "ebb (EH.B)" ; L as in "lay (L.EY)" ; W as in "we (W.IY)" ; IH as in "it (IH.T)" ; N as in "knee (N.IY)"