I've recently done some writing for OverthinkingIt.com, the website that subjects the popular culture to a level of scrutiny it probably doesn't deserve.
The one you book-loving folks might like is this one, which uses graphs and such to analyze why it seems like every other book is named The Something's Wife or The Something's Daughter. The results may surprise you.
Here's one of the charts from the article, showing how many books from the past five years had the words "daughter," "son," "wife," "husband," "father," or "mother" in the title. As you can see, it's broken down by genre.