Derek

Gender: Masculine
Origin: Frisian

The name is a contracted Frisian form of Diederich. It was imported to England in the 15th-century via trade with the Netherlands. It is currently the 169th most popular male name in the United States, (2010).

Another form is Dirk which is currently the 142nd most popular male name in the Netherlands, (2010).

Sources

1. http://www.behindthename.com/name/derek
2. http://en.wikipedia.org/wiki/Derek