According to the NYDN, Satterthwaite's legal guardian, Lillie Coley, filed the suit against Jay in December. The original question in the case arose back in 2010 when the family tried to force Jay to take a paternity test. The original claim was reportedly dismissed by a New Jersey judge due to jurisdictional issues after Jay's lawyer argued that the rap mogul lived in Manhattan and not New Jersey. Thus, Coley and the family are arguing that this was fraudulent information used by Jay and his team to avoid taking the test.
As far as Satterthwaite's rap career goes, TMZ was able to obtain footage of one of his videos, which you can view below. We will continue to update this story as it unfolds.