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Thompson, Byron C.

Byron C. Thompson - Claremont, CA

Attorney at Thompson Thompson Valladolid

Lawyers in Claremont, CA

395 S. Indian Hill Blvd. Claremont, CA 91711

  • 1 Super Lawyers®
  • 48 Years 
    Experience

Updated: 02/16/2026

Attorney Information

Overview

Attended University of Southern California - Undergraduate Degree Bachelor of Arts 1972; Graduated Univ. of La Verne, Juris Doctor, 1978. Have practiced Family Law since 1978 to present; Certified Specialist 1985 and Admitted to the American Academy of Matrimonial Attorneys 1993. Practice has included representing clients in high conflict custody, support and dissolution actions. Have represented clients at the Appellate and Supreme Court levels, most notiably Montenegro v. Diaz, Trial and Appellate Attorney, and in Re Marriage of Biallas, Trial and Appellate Attorney. Married to Diantha Orme Thompson 52 years, 3 children and 8 grandchildren.


Awards and Honors

Super Lawyers® Selectees

SuperLawyers

Byron C. Thompson included in a Super Lawyers® list

Honors

  • Jennifer Prooks Lawyer of the Year Award, Western San Bernardino Bar Association, 2017 - 2018
  • Top Attorneys in Southern California as published in Los Angeles Magazine, 2005 - Present

Other Sources of Feedback About Byron C. Thompson

Included on the 2026 Southern California Super Lawyers list


Past Lists

  • 2025 Southern California Super Lawyers list
  • 2024 Southern California Super Lawyers list
  • 2023 Southern California Super Lawyers list
  • 2022 Southern California Super Lawyers list
  • 2021 Southern California Super Lawyers list
  • 2020 Southern California Super Lawyers list
  • 2019 Southern California Super Lawyers list
  • 2018 Southern California Super Lawyers list
  • 2017 Southern California Super Lawyers list
  • 2016 Southern California Super Lawyers list
  • 2015 Southern California Super Lawyers list
  • 2014 Southern California Super Lawyers list
  • 2009 Southern California Super Lawyers list
  • 2008 Southern California Super Lawyers list
  • 2007 Southern California Super Lawyers list
  • 2006 Southern California Super Lawyers list
  • 2005 Southern California Super Lawyers list
  • 2004 Southern California Super Lawyers list

Education

  • Legal Education

    • University of La Verne College of Law, La Verne, California, 1978
      J.D.
  • Non Legal Education

    • University of Southern California, Los Angeles, California, 1972
      B.A.
      Major: Political Science

Current Employment Position(s)

  • Partner

Past Positions

  • Tuckerman and Thompson, Partner
  • Byron C. Thompson Atty at Law, Principal

Representative Cases

  • Montenegro v. Diaz
    • Citation: 26 6th 249
    • Court: Calif. Supreme
    • Year: 2001
  • Marriage of Biallas
    • Citation: 65 CA 4th 755
    • Court: Calif. 4th Dist
    • Year: 1998
  • Trial & Appellant attorney - In Re the Marriage of Biallas, 4th District Court of Appeal
  • Trial & Appellant attorney - In Re the Marriage of Montenegro, California Supreme Court.

Bar Admissions

  • California, 1978
  • Supreme Court of the United States of America, 2008

Specialties and Certifications

  • Family Law, State of California, 1985 - Present

Other Affiliations

  • American Academy of Matrimonial Lawyers, 1993 - Present (Fellow)

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Contact

Google Map

Claremont, CA

395 S. Indian Hill Blvd.
Claremont, CA 91711

Directions

Phone: 800-448-8856

Fax: 909-621-0172

Email: Send a message

  • Credit Cards Accepted

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