Cowboys' Marion Barber's brain will not be donated for CTE
Ex-Cowboys star Marion Barber III died of heat stroke and officials rule out foul play
Former Wayzata star Marion Barber III found dead
Former Dallas Cowboy RB Marion Barber III dead at 38
Marion Barber's cause of death revealed after former Dallas Cowboys running back was found dead in his apartment
Ex-Cowboys star Marion Barber III died of heat stroke and officials rule out foul play
What Was Marion Barber III's Cause of Death? Details
Louis Nix III, Former NFL and Notre Dame Player, Dead at 29
Marion Barber death cause: Family not expecting any foul play
Barber family details RB's death; no CTE research on ex-Cowboy's brain