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About me

John is a partner with Gentry, Smith, Dettmering, Morgan & Schnatmeier, LLP.  His practice areas include Criminal Defense, Personal Injury and general litigation.


John was born in Darien, Connecticut in 1964.  He attended Florida Southern College and obtained his Bachelor of Arts degree in 1987.  He received his Juris Doctor degree from Mercer University School of Law in 1990. While at Mercer Law School, John was a member of the Mercer Law Review, a member of the Mercer Law Review Student Writing Editor’s Staff, a member of the Mercer Moot Court Board and the Mercer University Craven Cup Moot Court Team.  John was admitted to the State Bar of Georgia as well as the Florida Bar in 1990.  Prior to joining the firm, John was a partner with the law firm of Flournoy, Morgan & Schnatmeier, LLP.  Before going into private practice, John was a prosecutor with the Cobb County Solicitor General’s office from 1992 until 1997 where he was selected as the Prosecutor of the Year in 1995.  In addition to his duties as a prosecutor with the Solicitor General’s office, John was an instructor at the North Central Georgia Law Enforcement Academy and Cobb County Public Safety and Police Training Center from 1994 to 1997.  He began his legal career with a law firm in St. Petersburg, Florida where he practiced general civil litigation.    


John is also an associate Judge for the City of Marietta, the City of Powder Springs, the City of Woodstock and a Pro Hac Judge in Cobb County State Court as well as Cobb County Juvenile Court.  He is currently a member of the State Bar of Georgia, the Cobb County Bar Association, the Georgia Trial Lawyers Association, the Cobb County Trial Lawyers Association, the Georgia Association of Criminal Defense Lawyers, the Cobb County Criminal Defense Section and is a founding member of the Marietta Lawyers Club. John is a board member with the City of Kennesaw Development Authourity. 


In addition to the Georgia and Florida Bar, John has been admitted to practice before the Georgia Supreme Court, the Georgia Court of Appeals, and the U.S. District Court for the Northern District of Georgia and the Middle District of Florida.


John lives in Kennesaw, Georgia with his wife and three children.


Practice areas


  1. Criminal Defense: 35%
    26 years
  2. DUI & DWI: 35%
    26 years
  3. Personal Injury: 30%
    21 years



Free consultation (60 minutes)

Payment types:

Cash, Credit card

Attorney endorsements

17 total 

Are you an attorney? Endorse this lawyer

  • Dirk Julius Derrick

    I endorse this lawyer for his practice in personal injury!


    Dirk Derrick Trucking accident Attorney
    Relationship: Fellow lawyer in community

  • Jonathan Ross Brockman

    I have known John since law school in the 1980's. We were on law review together. I also worked with him at the Cobb County Solicitor's Office. John is intelligent, articulate, hard working and ethical. I recommend him in the personal injury area.


    Jonathan Brockman Car accident Attorney
    Relationship: Co-worker

Contact info

278 North Marietta Parkway
Marietta, GA, 30060


GAActive Member in Good Standing 199007/15/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Prosecutor of the YearCobb County Solicitor General's Office1995
Law ReviewMercer Law School1988
Moot Court BoardMercer Law School1988
Work experience
TitleCompany nameDuration
Judge - Pro HacCobb County Juvenile Court2011 - Present
Associate JudgeMunicipal Court of Marietta2010 - Present
Associate JudgeMunicipal Court of Powder Springs2010 - Present
Associate JudgeMunicipal Court of Woodstock2010 - Present
PartnerGentry, Smith, Dettmering, Morgan & Schnatmeier, LLP2006 - Present
Judge - Pro HacCobb County State Court1996 - Present
PartnerFlournoy, Morgan & Schnatmeier, LLP1997 - 2006
Assistant Solicitor GeneralCobb County Solicitor Generals Office1992 - 1997
Association namePosition nameDuration
City of Kennesaw Development AuthorityBoard Member2010 - Present
Marietta Lawyers ClubBoard of Directors2008 - Present
Georgia Trial Lawyers AssociationMember2005 - Present
Cobb Co. Crimianl Defense SectionMember1999 - Present
Georgia Association of Criminal Defense LawyersMember1998 - Present
Cobb County Trial Lawyers AssociationMember1998 - Present
Cobb County Bar AssociationMember1992 - Present
State Bar of GeorgiaMember1990 - Present
State Bar of FloridaMember1990 - Present
Legal cases
Case nameOutcome
Carothers vs. Town Center Hospitality, Inc. d/b/a Super 8 Motel, Cobb County State Court, Civil Action No: 05-A-10029-4Plaintiff's Verdict
See all legal cases 
Publication nameTitleDate
Mercer Law ReviewTaxing Tax-Free Municipal Bonds1990
School nameMajorDegreeGraduated
Mercer University - Walter F. George School of LawLawJD - Juris Doctor1990
Florida Southern CollegeEnglishBA - Bachelor of Arts1987
Speaking engagements
Conference nameTitleDate
Police TrainingCriminal Law and Procedure; Constitutional Law1997
Police TrainingCriminal Law1996