Reply #5: Apparently so.

[NYC]

Mark Green's brother is Stephen L. Green, real estate mogul.

I found this:

As one could have expected, there's an avalanche of mainstream media coverage today on Air America Radio's buyout by "progressive" Manhattan real estate developer Stephen L Green.

And, as the dust settles, it's becoming clear his purchase of the long- suffering liberal radio network is designed to ensure his brother Mark (seen in photo), a perennial local political candidate and occasional fill-in host, is locked into his own talk shift there.




http://radioequalizer.blogspot.com/2007/01/stephen-green-mark-green-air-america.html