Why is the fake name for prostitutes, hostesses, and geisha called a "Genji name?"
The origin family name is the original dude. The original dude comes from the original and first novel ever written, the Tale of Genji. These kanji represent Genji, good ol' Genji. Perhaps hopping over to the reading will help you to know the meaning of this kanji.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.