The Bed-Stuy man who stabbed his 2-year-old in the head this weekend — accidentally, the Post assures us; he was trying to stab the boy’s mother — has been apprehended. Cops found Jamarr Brown, 24, and are mulling charges. The boy, Jaden Brown, was in mother Nicole Brown’s arms when his dad went off. The assailant fled when paramedics arrived. The boy is said to be recovering in stable condition. Photo (cc) Digiart2001.