Check it out here http://www.joshhosler.biz/NumberOneInHistory/SelectMonth.htm . I looked up all three of the boy’s birthdays just for fun.

Alex (Feb 17, 2006) - “Check On it” Beyonce
Anthony (March 17, 2003) - “In Da Club” 50 Cent
Tommy (March 22, 2001) - “Butterfly” Crazytown