President and Director
John A. Guerra was born in McAllen, Texas and was raised on his family’s cattle ranch in Starr County, Texas. He interned at the firm in 1987 and became an associate in 1989. He later became a shareholder in 1994 and President of the firm in 1996. He continues to manage the affairs of the firm today, while remaining active as lead trial counsel on a full docket of cases. Read Biography
Vice President and Directors
Robert R. Stearns
Robert Stearns was born in Trenton, Michigan and grew up in the Greater Detroit Area. He attended Wayne State University in Detroit, where in his third year, he was the co-Chair of the Law School’s national mock trial team.
Brittany K. Barrera
Brittany Barrera was born in Corpus Christi, Texas. She received her Bachelor of Arts and Sciences, summa cum laude in Political Science and History in 2013 from Texas A&M University Kingsville. Brittany moved to San Antonio and received her Juris Doctor from Saint Mary’s University School of Law in San Antonio, Texas in 2016.
Esther Mahon Marks
Ms. Marks was born in County Galway, Ireland and moved to New York with her family as a child. She has been with the firm for over 30 years and has been a Legal Administrator since 1992. Ms. Marks is responsible for the day to day operations of the firm as well as the responsibility for staff personnel.
Esther enjoys traveling, dancing and Pilates.