Names in literature

Do you ever notice that certain names will pop up in literature? Right now I am reading three books that all have a character named Gwen or Gwendolyn. I recently started to read Daniel Deronda by George Eliot and the main character is named Gwendolen. When I opened Silver Sparrow by Tayari Jones, I was surprised to see that the mother of the main character is Gwendolyn. In a third book, Murder on the Rocks by Karen MacInerney, one of the minor characters is named Gwen. I have also noticed lately that Lily is a very popular name for females in fiction, and that Audrey is making a come-back. Haven't noticed too many characters named Wendy, although that name originally comes from a fictional character. What names are you noticing in your reading?