I know what you mean.
Bertha in English falls flat, but BEHR-ta is gorgeous, to me at least.
If you don't think that pronunciation would be a daily hassle, then yes,
Erna (EHR-na) sounds gorgeous.
Erna Charlotte (shar-LOT-eh)
Erna Sophie Erna Wilhelmina Erna Rosalinde
Erna JohannaErna Margaret /
MargretErna CeciliaErna MatildaErna CarolineErna KatharineErna Renata /
RenateErna JosephineErna FrancesErna Brigitte (
German pronunciation, not French)(I'm not sure on the spelling for the
German variant, though)
Erna Christine /
KristineErna Veronica /
VeronikaErna Gisela (hard "g" sound)