Aude, or Alda, Alde, was the sister of Oliver and betrothed of Roland

Roland

Roland was a Frankish military leader under Charlemagne who became one of the principal figures in the literary cycle known as the Matter of France. Historically, Roland was military governor of the Breton March, with responsibility for defending the frontier of Francia against the Bretons...

 in The Song of Roland

The Song of Roland

The Song of Roland is the oldest surviving major work of French literature. It exists in various manuscript versions which testify to its enormous and enduring popularity in the 12th to 14th centuries...

and other chansons de gestes. The story of her engagement to Roland is told in Girart de Vienne

Girart de Vienne

Girart de Vienne is a late twelfth-century Old French chanson de geste by Bertrand de Bar-sur-Aube. The work tells the story of the sons of Garin de Monglane and their battles with the Emperor Charlemagne and it establishes the friendship of the epic heroes Olivier and Roland.The poem comprises...

.

In The Song of Roland Aude is first mentioned by her brother Oliver when he tells Roland that the two will never be married, when the two counts are arguing before the battle; they are later reconciled, but both die fighting the Saracen

Saracen

Saracen was a term used by the ancient Romans to refer to a people who lived in desert areas in and around the Roman province of Arabia, and who were distinguished from Arabs. In Europe during the Middle Ages the term was expanded to include Arabs, and then all who professed the religion of Islam...

s. When Charlemagne

Charlemagne

Charlemagne was King of the Franks from 768 and Emperor of the Romans from 800 to his death in 814. He expanded the Frankish kingdom into an empire that incorporated much of Western and Central Europe. During his reign, he conquered Italy and was crowned by Pope Leo III on 25 December 800...

 returns to Aix

Aachen

Aachen has historically been a spa town in North Rhine-Westphalia, Germany. Aachen was a favoured residence of Charlemagne, and the place of coronation of the Kings of Germany. Geographically, Aachen is the westernmost town of Germany, located along its borders with Belgium and the Netherlands, ...

 and informs Aude that Roland has died, she collapses at the Emperor's feet and dies of grief.

"The Lovely Alda" is part of Edward MacDowell

Edward MacDowell

Edward Alexander MacDowell was an American composer and pianist of the Romantic period. He was best known for his second piano concerto and his piano suites "Woodland Sketches", "Sea Pieces", and "New England Idylls". "Woodland Sketches" includes his most popular short piece, "To a Wild Rose"...

's 1891 orchestral composition, Two Fragments after the Song of Roland.