Am I my cousin's keeper?

If so, I'm in trouble. Yesterday I went to a family party and discovered that my cousins have several children I never knew about. They are all adorable, and some of them are old enough that I'm seriously disturbed I didn't realize they existed. Luke is about 3 months old (I give myself a pass on not knowing about him), Jack is nearly one, and Megan is 15 months old (I have no excuse to not know about her). Way to go, self.