E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Leilah [Li-lah].
A beautiful young slave, the concubine of Hassan, Caliph of the Ottoman Empire. She falls in love with the Giaour, flees from the seraglio, is overtaken by an emir, and cast into the sea. (Byron: The Giaour.)