NFL and Dallas Cowboys fans mourned the death of former running back Marion Barber III last month.

He was found dead in his Texas apartment on June 1st after police performed a welfare check.

A former Pro Bowler for the Cowboys, he played 6 of his 7 NFL seasons in Dallas.

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The Cowboys released the following statement following his passing:

"We are heartbroken by the tragic death of Marion Barber III. Marion was an old-school, hard-nosed football player who ran with the will to win every down. He had a passion for the game and love for his coaches and teammates. Our hearts go out to Marion's family and friends during this difficult time." 

Barber was known for his physical style of play and knack for scoring touchdowns. He quickly became a fan favorite among Cowboy fans.

Many wondered what led to Barber's cause of death.

Sadly, it was heat.

The Collin County medical examiner’s office have released the findings of his autopsy, citing heat stroke as the cause of death.

LOOK: The story behind every NFL team name

Stacker delved into the story behind every NFL football team name. Overall team records, also included, are reflective of NFL regular-season games. There are some football teams with well-known nicknames—the Jets, for instance, are often referred to as Gang Green—but we also divulge how some teams’ official names are sparingly used (the Jets’ neighbors, the Giants, are actually known as the New York Football Giants). Sometimes a team name can tell you a lot about local history: The Vikings of Minnesota draw upon the area’s strong ties to Scandinavia, and the Tampa Bay Buccaneers are dripping in local legend related to Florida’s pirate past.

Let’s kick off the countdown with the folks who earned their nickname by buying boxes of used team jerseys.

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