Gabriel

The name Gabriel is actually an odd one. It's a relatively ubiquitous name, coming in at 24 on the most popular boys' name list in the US in 2008. And yet, although the name is important to Judaism, Christianity, and Islam, it is only recently that it has become popular.

In the Old Testament, Gabriel the angel is sent by God to fight Jacob, but in fact to help Jacob find his calling. In the New Testament, Gabriel the angel announces to Mary the birth of her son, Jesus. And according to Islam, the angel Gabriel dictates the Qur'an to Muhammad.

Still, even with its history, the name has only become a Top 100 name in the US in the 1970s.

One thing that comes to mind is that although Gabriel has been gaining popularity, it is also passionately disliked by many. The name calls attention to itself, and not all parents feel comfortable giving their kids a name that will define them as Gabriel may do.

2009 Update:
The name has continued its rise, ending 2009 in the 22nd spot.

2010 Update:
Another small rise, ending at 21.

Christian

The name Christian comes from the Greek (and later, Latin) word for Follower of Christ. Although the name is popular for boys in the US and in many other countries, it has been used for girls as well. It had shown a rapid rise in popularity for girls, but has just recently left the top 1000 list of girls' names. As for boys, the name has been a top 100 name for 25 years, but it seems to be stuck in the 20s.

It's interesting to note Christian as yet another example of a name that appeals to traditionalists (specifically Christian ones), as well as to modern parents who like the simplicity of the short version: Chris.

As usual in instances of shortened versions and common nicknames, many parents who prefer the longer name Christian do not like the short version.

2009 Update:
Christian remained at the 23rd spot.

2010 Update:
The name has gone down to the 29ths spot.