What was the name of Tolkien's wife, whom he represented as Lúthien?

Tolkien's wife was Edith Tolkien, whom he represented as the Elf-maiden Lúthien.

Edith Bratt married J.R.R. Tolkien in 1916 after a long courtship that began when Tolkien was a teenager. Tolkien later connected their relationship with the story of Beren and Lúthien, in which a mortal man and an immortal Elf-woman overcome extraordinary obstacles to be together.

He had the names Beren and Lúthien engraved on their shared gravestone in Oxford. Tolkien's family history and personal experiences influenced his writing, but the fictional story is not a literal biography. Lúthien belongs to the mythology of the First Age and is the daughter of Thingol and Melian.

Edith was also a singer and pianist. Tolkien wrote that her singing helped inspire the image of Lúthien dancing in a woodland clearing, an episode that became one of the most important love stories in his legendarium.