Daphne is the daughter of Peneus, the river god. Apollo falls in love with her and she ultimately destroys her own beauty to escape him.
“At once Apollo felt love, but Daphne fled the mention of love and found pleasure in the remote parts of the forest. Many men sought after Daphne, but she , avoiding all her suitors and shunning the sight and thought of men, wandered over the pathless groves and had no care for Hymen, or Amor, or marriage” (Ovid/Hendricks 53).
She refers to this as perpetual maidenhood.
Peneus turns her into a tree nymph with barkskin and leaves so that she can “destroy my beauty which has made me pleasing, by changing it!” (Ovid/Hendricks 54).