Beyonce Knowles gave birth to a baby girl named Blue Ivy Carter Saturday morning in New York. Apparently Beyonce and Jay Z want her to grow up to be comic book villainess. People Magazine says:

The couple chose the name “Ivy” because of the number 4 or Roman numeral IV, which is significant in Beyoncé and Jay-Z’s relationship.

Blue Ivy [is a combination of] “Blue” for Jay-Z’s Blueprint albums and [the first two letters of the the name "IVy" are the same two letters as the Roman numeral 4], which is their favorite number.

Beyoncé’s birthday is Sept. 4, while Jay-Z’s is Dec. 4; the two married on April 4 in 2008; they have matching “IV” tattoos on their wedding fingers; and Beyoncé named her latest album 4.

Somebody sure put a whole lot of thought in that name. I usually just named my kids after whatever brand of whiskey I happen to be drinking when I got knocked up. Jameson, Jim Beam, and Jack Daniel, respectively.