Please answer a question about the following article about Apollo:

Leucothea was daughter of Orchamus and sister of Clytia. She fell in love with Apollo who disguised himself as Leucothea's mother to gain entrance to her chambers. Clytia, jealous of her sister because she wanted Apollo for herself, told Orchamus the truth, betraying her sister's trust and confidence in her. Enraged, Orchamus ordered Leucothea to be buried alive. Apollo refused to forgive Clytia for betraying his beloved, and a grieving Clytia wilted and slowly died. Apollo changed her into an incense plant, either heliotrope or sunflower, which follows the sun every day.

Who was Leucothea's mother?
Orchamus