Stephen Holder

Emma Mathis, the mother of Colts All-Pro linebacker Robert Mathis, has died.

Mathis confirmed the news with a posting on Twitter, saying "Miss me but let me go. I now know my angels (sic) name."

Emma Mathis had been suffering from cancer of the esophagus after her diagnosis in May 2013. Robert Mathis said her illness played a role in he and his wife's decision to try and conceive a third child through fertility treatments. That, he said, resulted in his decision to use the drug Clomid, which can be used for fertility purposes but is banned by the NFL's performance-enhancing drug policy.

Mathis was suspended for four games and suffered a season-ending Achilles injury during his suspension.

Last season, while his mother's illness kept her away from Indianapolis and attending Colts games, Mathis spoke of her dedication to following the team.

"Trust me, she's been at home recovering and watching on TV and fussing at any O lineman who knocks me to the ground," he told the Indianapolis Star. "She's definitely been with me, just not physically."

Miss me but let me go. I now know my angels name #MyAce#MomDukes#RIP#LoveAlways#EmmaMathis…http://t.co/FX3mTcsq44

— ROBERT MATHIS The1st (@RobertMathis98)

October 24, 2014