楼主有打错吧,应该是:Do you know the boy named Peter?你知道那个名字叫PETER 的男孩吗?( named 过去分词作后置定语‘名字叫……’ ,相当于Do you know the boy( who is ) named Peter?)
named = who is named 希望回答对您有所帮助,请及时采纳,多谢!
named可以理解为whose name is,但实际上是who is named的省略,这是一个定语从句