Grethel is a variant form of the English, German, Polish, Scandinavian, and Austrian Greta.
Grethel is also a pet form of the English and Scottish Margaret.
Grethel is a seldom used baby name for girls. It is not in the top 1000 names. In 2015, within the group of girl names directly related to Grethel, Margaret was the most regularly used.
† English pronunciation for Grethel: G as in "grin (G.R.IH.N)" ; R as in "race (R.EY.S)" ; EH as in "ebb (EH.B)" ; TH as in "theme (TH.IY.M)" ; AH as in "mud (M.AH.D)" ; L as in "lay (L.EY)"