Aesacus

Aesacus sorrowed for the death of his wife or would-be lover, a daughter of the river Cebren, and was transformed into a seabird.

[1] Apollodorus and Tzetzes also make Aesacus a seer who has learned the interpretation of dreams from his grandfather Merops.

In Ovid's Metamorphoses, Aesacus is an illegitimate son of King Priam secretly born to the nymph Alexirhoe, daughter of the river Granicus.

One day he catches sight of the nymph Hesperia, daughter of the river Cebren, falls in love, and pursues her.

Aesacus, unable to bear living any longer, leaps from a tall cliff into the sea but as he plunges he is changed into a bird by Tethys.

The death of the Nymph Hesperia by Elie Delaunay .
Aesacus and Hesperia, engraving by Johann Ulrich Krauss for a 1690 edition of Ovid's Metamorphoses Book XI, 771–776.
Aesacus and Hesperia, engraving by Virgil Solis for Ovid's Metamorphoses Book XI, 749–795.