OJ Simpson's Ex Sister-in-Law SON ARRESTED for Domestic Violence

12/27/2011 8:13 AM PST BY TMZ STAFF
Sean Brown mug shot
Denise Brown
-- who became famous after OJ Simpson killed her sister, Nicole Brown Simpson -- is now in the eerie position of dealing with domestic violence again, and this time the alleged perpetrator is her son.

Sean Brown and his live-in girlfriend, Amy, were arrested at their home in Orange County, CA, for felony corporal injury on a spouse.  Law enforcement sources tell us they received a call at 2:30 AM today, responded to the scene and noticed visible marks on both parties.

Both are currently in custody. 

Denise founded the Nicole Brown Foundation to combat domestic violence.