Cumberland & Erly, LLC

Robyn E. Riddle

Robyn E. RiddleRobyn E. Riddle is an experienced criminal trial attorney who served as an Assistant State's Attorney for nearly 19 years before joining Cumberland & Erly, LLC. She currently concentrates her practice on complex litigation, including both criminal and civil matters, DWI, DUI, drug cases, estate matters, and personal injury cases. Ms. Riddle graduated from the University of Maryland, College Park in 1983, and received her Juris Doctor from the University of Baltimore School of Law in 1987.  Mrs. Riddle has achieved an AV rating from Martindale-Hubbell, the national directory of attorneys, which reflects the highest possible peer rating in both legal ability and ethical standards.

Ms. Riddle has been actively involved in litigation practice since earning admittance to the Maryland Bar in 1988. From 1988 to 1992, she practiced civil law and criminal defense at the offices of Handen & Krug in Prince Frederick, Maryland. She went on to serve as an Assistant State's Attorney for the Calvert County State's Attorney's Office from 1992 to 1999, handling child support cases, juvenile cases, and District and Circuit Court criminal cases. In 1999, she was appointed Senior Assistant State's Attorney for the St. Mary's County State's Attorney's Office, and held that position until 2011. Ms. Riddle has tried numerous cases to a jury, including murder, manslaughter, armed robbery, rape, sexual offenses, burglary, and serious assaults.

Ms. Riddle is a member of the Maryland State Bar Association, the Calvert County Bar Association, the St. Mary's County Bar Association, and the Maryland Bar Foundation. She is a past president of both the Calvert County and St. Mary's County bar associations, and is a former member of the Maryland State's Attorney Association.


  • University of Baltimore School of Law, Juris Doctor, 1987
  • University of Maryland, College Park, Bachelor of Science, 1983


  • Maryland, 1988

Professional Associations & Memberships

  • Maryland State Bar Association, Member
  • Calvert County Bar Association, Member and Past President
  • St. Mary's County Bar Association, Member and Past President
  • Maryland Bar Foundation
  • Maryland State's Attorney Association, Former Member