These days, it seems that no detail in the lives of our favorite celebrities is kept secret. We know their favorite coffee drinks, their dating history, their favorite items of clothing, even when they have been allegedly neglecting their personal hygiene.

But do you know your favorite celebrity’s middle name?

According to celebrity name experts Pamela Redmond Satran and Linda Rosenkrantz of nameberry.com, middle names were quite uncommon in the U.S. until the 18th century. As time went on, middle names became almost expected in American culture. While they are most often used as a nod to a family’s lineage, they are occasionally just added to a first name to make it sound more whimsical.

Sure, you might know actors like Samuel L. Jackson’s middle initial, but do you know what the “L” stands for?

You might be surprised to learn which sexy starlet’s middle name is Gertrude. And which television star’s middle name is William Frederick Dempsey George Rufus.

Take a peek inside and see if you can guess a few of FOX News' favorite celebrity middle names.