Its source is a Gaelic expression meaning "Broken-hearted, sorrowful."
The name Deidra ranked 1012th in popularity for females of all ages in a sample of the 1990 US Census.
Though this name has fluctuated in use, it has been quietly present throughout the last century.
This derivation is not certain. Other possibilities include ''fear'' and ''she who rages.''
All these meanings reflect the Irish legend of Deirdre, whose lover was slain as he tried to elope with her to escape the King of Ulster, to whom Deirdre was promised in marriage. In modern times, both J.M. Synge and W.B. Yeats were inspired to write about this sorrowful maiden.