Atty. William Marion Duncan

Atty. William Marion Duncan

William Marion Duncan is a lawyer practicing criminal defense, dui / dwi, criminal law and 1 other area of law. William received a B.S. degree from Northeast Missouri State University in 1967, and has been licensed for 45 years.

Yreka Yreka 45 yrs experience 45 year
Call (530) 572-9295 Book Appointment

Profile Summary

About William Marion Duncan at a glance

William Marion Duncan is a Partner; President based in Yreka, California, practicing at William M Duncan Attorney At Law. They have 45+ years of legal experience, licensed to practice since 1981. Their practice focuses on dui/dwi, criminal defense, and litigation. Admitted to practice in Virginia U.S. Court of Appeals, District of Columbia and Ninth U.S. District Court, Eastern, Central (1981), District of Columbia (1983), and California (1988). Educated at Georgetown University Law Center (J.D., 1981) and Northeast Missouri State University (B.S., 1967). Active member of Contra Costa Bar Association State Bar of California Virginia State Bar The District of Columbia Bar Maritime Law Association of the United States. Serands clients in Yreka, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Marion Duncan is a lawyer practicing criminal defense, dui / dwi, criminal law and 1 other area of law
  • William received a B.S. degree from Northeast Missouri State University in 1967, and has been licensed for 45 years
  • William practices at William M. Duncan Attorney at Law in Yreka, CA

Practice Areas Explained

William Marion Duncan's Areas of Practice

Each practice area below reflects the types of cases William Marion Duncan handles, with a brief overview of what that area of law covers.

DUI / DWI Defense

Find experienced DUI and DWI defense attorneys near you. Compare verified profiles, read client reviews, and consult about your case for free.

William Marion Duncan is one of 29,976 dui/dwi attorneys indexed nationally. Browse dui/dwi attorneys in California →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

William Marion Duncan is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in California →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

William Marion Duncan is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Yreka are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Yreka or all attorneys in California.

Frequently Asked

Common questions about William Marion Duncan

Where is William Marion Duncan's law office located?
William Marion Duncan's law practice is located in Yreka, California. The firm is William M Duncan Attorney At Law. You can contact the office directly through this profile page.
What practice areas does William Marion Duncan handle?
William Marion Duncan focuses on dui/dwi, criminal defense, litigation. Each practice area listed reflects experience handling cases of that type in California.
How long has William Marion Duncan practiced law?
William Marion Duncan has 45+ years of legal experience and has been licensed since 1981.
Where did William Marion Duncan go to law school?
William Marion Duncan earned their education at (J.D., 1981); (B.S., 1967).
How can I contact William Marion Duncan for a consultation?
You can contact William Marion Duncan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Georgetown University Law Center
- 1981
B.S.
Northeast Missouri State University
- 1967

Bar Admissions

Virginia U.S. Court of Appeals, District of Columbia and Ninth U.S. District Court, Eastern, Central
Admitted: 1981
District of Columbia
Admitted: 1983
California
Admitted: 1988

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