Megalomaniac or Narcissist?

My husband and I recently spent the Easter Sunday car ride home discussing what 'Narcissism' meant to us and if we knew of any whom had children. (If 'yes', how did their child rearing techniques compare to us 'normal' folk?).  He believes that the majority can't bring themselves to have children or detest them (as well as dogs) altogether.

The result was that we knew a small amount of Narcissists, none which had children, one which was currently pregnant (jury is still out, we'll let you know what happens when reality sets in) and one that was borderline. 

In researching the narcissistic personality disorder, I came across this quote and have since decided Mr.Borderline is definitely a Megalomaniac:

"The megalomaniac differs from the narcissist by the fact that he wishes to be powerful rather than charming, and seeks to be feared rather than loved. To this type belong many lunatics and most of the great men of history." Bertrand Russell

And just to be sure I couldn't see the forest for the trees, I took this test and my results are highly paranoid, highly histrionic and moderately narcissistic, amongst other low scores, like obsessive compulsive; but one look at the bottom of my closet and you would've known that for yourself, no test needed. 

Do you know any narcissists with children (I strongly suspect said 'bunny' in previous post)? Is this the mom with a live in nanny who never sees her kids? If yes, why do you think they continue to have kids?