Justa Grata Honoria Augusta

Justa Grata Honoria, commonly referred to during her lifetime as Honoria, was the older sister of the Western Roman Emperor Valentinian III — famous for her plea of love and help to Attila the Hun, which led to his proclamation of his claim to rule the Western Roman Empire.

She offered herself in marriage to Attila the Hun, who demanded the western half of the Roman Empire as her dowry. As a result, her brother put her under close guard and married her to a senator, and Attila invaded the Empire in 451 and 452.

Coins attest that she was granted the title of Augusta not long after the ascension of her brother in 426.

• https://en.wikipedia.org/wiki/Justa_Grata_Honoria