Pop sensation Justin Bieber turned 18 years old on Thursday, March 1, and it came as no surprise that the singer-dancer, who frequently trends on social media website Twitter thanks to his large youth fan base, received thousands if not millions of congratulatory messages in the form of tweets, driving the hashtag #HappyBirthdayKidrauhl to the coveted spot of top trending subject worldwide on Twitter.

But who is KidRauhl and why have 'Beliebers' across the world chosen to celebrate their hero's birthday with this bizarre message. The answer can be traced back to a trilogy of novels written by Terry Goodkind called The Sword of Truth. The epic fantasy follows several protagonists on their quest to save the world. One of the story's protagonists is called Lord Rahl and Justin Bieber's father, Jeremy Jack Bieber, who was of the fan of the books, adopted the name after tweaking slightly to Lord Rauhl.

According to JustinBieberZone.com. Jeremy Bieber explained the decision nine years ago online when Justin was just nine years old:

My real name is Jeremy. I'm 29 years old and I live in Stratford, Ontario Canada. I got the name lordrauhl from a series of books I read (the main character being Lord Rahl).

I've been playing this style of spades for approximately five years now, and I consider myself one of the elite players at playsite. Part of my game...is getting you off yours.

I voice my uninvited opinion a lot, and say it like I see it, so I am disliked by a good majority of playsite. This is because I am competitive, and like to win - so when my partners make mistakes I call them on it. Be aware of this before becoming partners with me. I hate stupid people.

Aside from spades, I'm very active. I love the outdoors. I follow and play a variety of sports. I love camping and boating, but most of all, I love to travel. I've been to several countries, and hope to see the rest of the world.

My life is my son. He is 9 years old and is the most talented person I know. He's a looker too (just like his dad)!

You have to beat the best to be the best.

If Justin's dad is LordRauhl then you could call his son KidRauhl. The name first drew attention from Bieber's fans when Justin Bieber used it as the name for his YouTube channel, and resurfaced on the singer's 18th birthday as a way for fans to express their devotion to Bieber.

Bieber's father impregnanted his mother Patricia Lynn Pattie Mallette when she was just 18 years old. Pattie raised Justin as a single mother with her parents' help, while Jeremy Bieber went on to marry another women and settle down with two children. However, Justin Bieber still maintains contact with his father.