Marion Barber III's family doesn't know cause of death, memorial service planned for later this month
Cowboys' Marion Barber's brain will not be donated for CTE
Former Cowboy running back Marion Barber III dead at 38, Frisco Enterprise News
Family, friends, fans gather to celebrate the life of Marion Barber III
Marion Barber III Dead: Former Dallas Cowboys Pro Bowl Running Back For Was 38 – Deadline
Family, friends, fans gather to celebrate the life of Marion Barber III
Marion Barber Obituary - Betz, Rossi Bellinger & Stewart Family Funeral Home - Amsterdam - 2022