Judge John B. McMaster: Professional Background and Legal Expertise

TX Bar #: 24094837 (04/30/2015)

Appointed By: Williamson County Commissioners

Biography

The Hon. John B. McMaster is a judge for the Williamson County Court at Law No. 4 in Texas. He was appointed to the bench by the Williamson County Commissioners in 2005.

Prior to his appointment, McMaster worked as an attorney in private practice, specializing in family law matters.

McMaster earned a bachelor's degree from Baylor University in 1979. Then, in 1982, he completed a J.D. at South Texas College of Law Houston.

His memberships have included the Georgetown Independent School District Board, the Kiwanis Club of Georgetown, the Williamson County Coalition Against Underage Drinking, the Masonic Lodge, and Celebration Church.

McMaster was raised in Georgetown, where he graduated from Georgetown High School in 1976.

He is registered as a Republican.

Recent Cases by Hon. John B. McMaster

Estate Of Wojciech Stryjewski a/k/a Wojciech Tadeusz Stryjewski, Deceased

On January 6, 2026 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Jan 06, 2026

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Jan 21, 2026

Estate Of Andrea Coombs, Deceased

On January 6, 2026 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Jan 06, 2026

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Jan 21, 2026

Estate Of Jane Eyre Fatigante, Deceased

On August 6, 2025 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Aug 06, 2025

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Nov 28, 2025

Estate Of Michael Brian McShane, Deceased

On August 1, 2025 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Aug 01, 2025

Status

Closed

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Oct 10, 2025

Estate Of Lochie Lucile Fowler, Deceased

On December 30, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 30, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of David E. Thomson, Deceased

On December 30, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 30, 2024

Status

Closed

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Mary Fischer Saegert, Deceased

On December 30, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 30, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Margaret Gremillion Ducote a/k/a Margaret Mary Ducote, Deceased

On December 27, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 27, 2024

Status

Closed

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Succession of Property

Case Last Refreshed

Mar 19, 2025

Estate Of Linda Joy Hammonds a/k/a Linda J. Hammonds, Deceased

On December 27, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 27, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Genevieve Eleanor Johnson, Deceased

On December 27, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 27, 2024

Status

Closed

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Timothy J. Adams, Deceased

On December 26, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 26, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of William Edwin Hammonds a/k/a William E. Hammonds, Deceased

On December 23, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 23, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Jo Underwood Parr, a/k/a Jodi Parr, a/k/a Jo Gwen Parr, Deceased

On December 23, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 23, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Thomas F. Ressel, Deceased

On December 23, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 23, 2024

Status

Closed

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Alfred Hollis Meyers (Also Known as A.H. Meyers and Fred Meyers), Deceased

On December 20, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 20, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 19, 2025

Estate Of Charles L. Johnson, Deceased

On December 20, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 20, 2024

Status

Closed

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Succession of Property

Case Last Refreshed

Mar 19, 2025

Estate Of Priscilla Dee Hiner, Deceased

On December 20, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 20, 2024

Status

Closed

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Succession of Property

Case Last Refreshed

Mar 21, 2025

Estate Of Henry Miller, Jr., Deceased

On December 19, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 19, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 21, 2025

Estate Of John Hosang, Deceased

On December 19, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 19, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 21, 2025

Estate Of Joan Alice Monroe, Deceased

On December 18, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 18, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 21, 2025

Estate Of Linda Reynolds, Deceased

On December 18, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 18, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 21, 2025

Estate Of Kevin Champine, Deceased

On December 18, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 18, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 21, 2025

Estate Of Richard Alan Planck, Deceased

On December 18, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 18, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 21, 2025

Estate Of Georgina Cousins Savage, Deceased

On December 18, 2024 a case was filed in the jurisdiction of Williamson County. Judge John B. McMaster presiding.

Filed

Dec 18, 2024

Status

Active

Judge

Hon. John B. McMaster 👉 Discover key insights by exploring more analytics for John B. McMaster

Court

County Court at Law #4

County

Williamson County, TX

Case #

(Subscribe to View)

Practice Area

Probate

Matter Type

Estate Administration

Case Last Refreshed

Mar 21, 2025

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About

John B. McMaster
Party Affiliation Republican	Republican
Current Appointment Williamson County Court at Law No. 4	Williamson County Court at Law No. 4
Election/Appointment 2010 - Re-elected; 2014 - Re-elected; 2018 - Re-elected; 2022 - Re-elected	2010 - Re-elected; 2014 - Re-elected; 2018 - Re-elected; 2022 - Re-elected
Education J.D., South Texas College of Law Houston - 1982 Bachelor's degree, Baylor University - 1979	J.D., South Texas College of Law Houston - 1982 Bachelor's degree, Baylor University - 1979