Hyginus Fabulae, 58. Smyrna.
Smyrna was the daughter of Cinyras, king of the Assyrians, and of Cenchreïs. Her mother Cenchreïs stated haughtily that she had ranked her daughter's beauty above that of Venus. Venus then exacted punishment upon the mother by inflicting an unspeakable lust upon her daughter, such that the daughter lusted after her own father. (2) To keep her from death by hanging, her nurse intervened; and the nurse arranged without the father's knowledge that the daughter slept with her father. Smyrna conceived a child from this. To keep the pregnancy from becoming public, because she was moved by the shame, and she hid herself in the forest. Later Venus took pity upon the girl and transformed her into a tree from which myrrh flowed. From this tree Adonis was born, he who followed into the punishment meant for his mother.
242: Those who died by their own hand... include "Cinyras, the son of Paphos and king of the Assyrians, [died by his own hand] because he had had sexual relations with his daughter Smyrna."
— translation RTMacfarlane
58, Smyrna
Smyrna Cinyrae Assyriorum regis et Cenchreidis filia, cuius mater Cenchreis superbius locuta quod filiae suae formam Veneri anteposuerat. Venus matris poenas exsequens Smyrnae infandum amorem obiecit, adeo ut patrem suum amaret. (2) quae ne suspendio se necaret nutrix interuenit et patre nesciente per nutricem cum eo concubuit, ex quo concepit, idque ne palam fieret, pudore stimulata in siluis se abdidit. (3) cui Venus postea miserta est et in speciem arboris eam commutauit unde myrrha fluit, ex qua natus est Adonis, qui matris poenas a Venere est insecutus.
242, Qui se ipsi interfecerunt:
...Cinyras Paphi filius rex Assyriorum, quod cum Smyrna fila concuberat.