Erna may refer to: People. Erna (given name), a list of people with the name. Jeff Erna, American drummer. Sully Erna (born 1968), American musician and member of Godsmack. pen name of Anna van Gogh-Kaulbach (1869-1960), Dutch writer. Érna, or Iverni, a people of medieval Ireland. Other uses. Erna (mythology), a figure in Norse mythology. Erna (moth), genus of moths in the family Erebidae. Little Erna, the butt of Little Erna jokes popular in Hamburg. Erna (planet), a fictional world in C. S. Friedman's Coldfire Trilogy.
https://en.wikipedia.org/wiki/Erna