
Lewellen graduated from the University of Texas, in 1970, with a degree in Political Science. He subsequently attended the University of Texas School of Law, while serving as Governor Preston Smith’s Student Affairs Advisor for all college campuses within the state.
Thereafter, with approval of the State Board of Law Examiners, he successfully completed the work/study program required for bar eligibility. During such time, he also remained actively involved in the statewide political campaign of Lt. Governor Bill Hobby, while also employed with the law firm of Kent Hance. In December, 1973, having passed the bar examination, Lewellen was admitted to the practice of law by the Texas Supreme Court.
Lewellen is also authorized to practice law before the United States District Court, Northern District of Texas; and the United States Court of Appeals, 5th Circuit. Since 1977, he has been admitted to practice before the United States Supreme Court.
C.O. McMillan, a sole practitioner for 45 years, honored Lewellen by forming the partnership of McMillan & Lewellen, a litigation firm handling the legal needs of clients throughout North Central Texas. The law firm partners have enjoyed an active courtroom presence and professionalism covering the last 88 years.
Lewellen’s professional memberships have included the American Bar Association, the Texas Bar Association, the College of the State Bar, the Texas Trial Lawyers Association, the Criminal Defense Lawyers Association and the Erath County Bar Association.
Lewellen actively serves as the Tarleton State University Student Legal Advisor, assisting both students and faculty with legal issues. He has served in this capacity for over 30 consecutive years. He has also remained an active member of the President’s Club, promoting scholastic achievement and scholarships at the University.
Additionally, presiding District Judges have named Lewellen to serve
as “Special Prosecutor” in numerous high profile cases in Erath, Hood, Hamilton, Bosque, Comanche, Palo Pinto, and Eastland counties.
Lewellen has been named the criminal defense “go to” attorney in a survey of attorneys in this area, conducted by “Texas Lawyer”, a weekly publication.
He grew up in Temple, Texas, where his father sold appliances for Sears, and his mother worked at the Soil Conservation Service. They instilled in him a strong work ethic, the importance of faith, and a desire to fight for what is just and right.