A Barnegat Township man with a history of mental illness and unemployment has been ordered held until trial in the murder of his parents, the Ocean County Prosecutor’s Office said Monday.Michael Mulgrew, 34, was charged with murder, possession of a weapon for an unlawful purpose and unlawful possession of a weapon in the Nov. 2 stabbing deaths of his parents, Eugene, 71, and Cheryl, 69, in their township home. Mulgrew was arrested the same day.