What does "deirdre" mean?

The foremost tragic heroine in the Ulster Cycle of Irish mythology.

Deirdre

Common synonyms include: deirdre of the sorrows, first name, given name, legendary heroine, mythic princess, personal name.

/ˈdeːɹdɹə/ name

name ·Rare ·Advanced level

Proper Noun

1
The foremost tragic heroine in the Ulster Cycle of Irish mythology. Irish
2
A female given name from Irish.
"Deirdre, it seemed to him, was the most beautiful name in the world. But Mrs. Stanley had different views on nomenclature. She had never, she declared, heard so utterly preposterous a name. […]"Theatre and saltpetre are both spelt that way, Arthur; depend upon it, it is Deirder - a sort of peasant name like Darby and Biddy, a corruption of something else.""

"Deirdre thought that the stars had aligned themselves in her favour when she inherited millions from her grandfather."

From Irish Deirdre, from Old Irish Derdriu.