Sheppard subsequently filed numerous pro se legal actions attempting to overturn his conviction. SeeSheppard v. State , No. 02-12-00320-CR, 2012 WL 4121221, at *1 (Tex. App.—Fort Worth Sept. 20, 2012, no pet.) (mem. op.) (not designated for publication) (dismissed for lack of jurisdiction); In re Sheppard , No. 02-12-00423-CV, 2012 WL 5258707, at *1 (Tex. App.—Fort Worth Oct. 25, 2012, orig. proceeding) (mem. op.) (denying petition for writ of mandamus); In re Sheppard , No. 02-13-00011-CV, 2013 WL 135749, at *1 (Tex. App.—Fort Worth Jan. 11, 2013, orig. proceeding) (mem. op.) (dismissing petition for writ of mandamus for lack of jurisdiction); In re Sheppard , No. 05-13-00415-CV, 2013 WL 1688360, at *1 (Tex. App.—Dallas Apr. 18, 2013, orig. proceeding) (mem. op.) (dismissing petition for writ of habeas corpus for lack of jurisdiction); Sheppard v. State , No. 02-12-00234-CR, 2013 WL 3488264, at *1 (Tex. App.—Fort Worth July 11, 2013, pet. ref'd) (mem. op.) (not designated for publication) (affirming denial of Chapter 64 motions for forensic DNA testing); Sheppard v. State , No. 02-14-00079-CR, 2014 WL 2047924, at *1 (Tex. App.—Fort Worth May 8, 2014, pet. ref'd) (mem. op.) (not designated for publication) (dismissing appeal for lack of jurisdiction); In re Sheppard , No. 02-17-00141-CV, 2017 WL 2351094, at *1 (Tex. App.—Fort Worth May 5, 2017, orig. proceeding) (mem. op.) (dismissing petition for writ of mandamus for lack of jurisdiction). The Texas Court of Criminal Appeals eventually barred Sheppard from filing further challenges in that court