Interesting from the comments to the article above:
It is complicated. Allegedly, Glasgow is the son of Tina and all sharpton's father, al sharpton, Sr. Tina is a sister to al sharp ton, Jr. Allegedly, Glasgow is both nephew and brother to al sharpton, Jr.
http://open.nysenate.gov/legislation/bill/J3978-2011
Oh, that's why he's kept out of the media for the most part...