What Edie Lungreen’s answer to Is there a name in Greek based on the Greek root for “light” the way Luke/Lucius is based on the Latin root, luce? said. Of names in contemporary use, the most common by far (and transparent to Modern Greek speakers) is the feminine of Photius, Photina (Fotini), retrofitted to be the name of the Samaritan Woman in the Bible: St. Photina – Saints & Angels – Catholic Online; Martyr Photina (Svetlana), the Samaritan Woman, and Her Sons.