Our team's mission is to empower our clients to tax-efficiently protect and preserve assets, reduce family conflict, and maximize government benefits.

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"Is your estate plan, will, or trust sufficient or deficient?"

Our Team of Professionals

"We have an amazing Team at the Marquardt Law Firm. Each of them is driven to make sure that each of our clients has the best possible representation! Our clients truly become like a family member that we struggle for, cry over, and laugh with.” - Pat Petty

Todd A. Marquardt

Owner and Managing Attorney

Todd built the Marquardt Law Firm as a sole proprietorship on November 30, 2009 and converted to a Professional Corporation in 2011.

Marquardt received his bachelor's degree in government from New Mexico State University in Las Cruces, New Mexico earned his Juris Doctorate at St. Mary's University in San Antonio, Texas. It's no surprise, then, that he has chosen to run his practice across these two states, splitting his time between offices in Texas and New Mexico.

Todd worked for the Social Justice Clinic at St. Mary University School of Law as a Student Attorney for one year. During that time, he represented clients in divorce, child custody, and won an appeal with Social Security. Following law school and the Texas Bar Exam, Todd worked in a law office focusing on guardianship, a litigation law firm, and helped build a sole practitioner build an estate planning firm to six attorneys with comparable support staff.

Todd is the sole owner and managing attorney of Marquardt Law Firm, P.C. He built the law firm to accommodate clients so that people who need legal services have an advocate who is approachable and accessible. In order to do provide the best service, Marquardt Law Firm, P.C. has hired smart and compassionate team members who walk with clients through their legal issues. Todd relentlessly pursues excellence to make sure clients know the law firm is going above and beyond for them.

Marquardt's has developed a strong referral network throughout the legal industry. When potential clients come to him with legal issues outside the areas in which he focuses, he introduces those in need to an attorney Todd knows can handle their unique issue. Todd’s goal is to never close the door on a relationship, whether the final answer lies within his office or elsewhere.

A family man and small business owner himself, Marquardt's mission is to help adult children care for their elderly parents and to advocate for business owners. Marquardt's wife and he are the proud parents of two sons and a daughter. Todd’s mission is to serve God by leading his family, vocation, community and country with the gifts and talents God has given him. He enjoys golfing, watching baseball, and hunting. He is a member of the Rotary Club, active in his church, and involved with the San Antonio Coalition for Veterans.

Marquardt is a licensed member of the State Bar Associations of Texas, New Mexico, and San Antonio, as well as the National Academy of Elder Law Attorneys, Inc. and the United States Bankruptcy Court of the Western District of Texas. He is an accredited attorney with the Office of Veterans Affairs and Marquardt Law Firm is an accredited business with the Better Business Bureau.

Brittany L. Lastition, Esq

Associate Attorney

Recently relocated to the San Antonio area from Florida Ms. Lastition has a passion for helping families prepare legal plans that will work for their family when it is needed most. Ms. Lastition has learned first-hand the devastating effect that poor legal planning can have on a family and will work daily toward Marquardt Law Firm, P.C.’s vision to become the preeminent, regional asset protection and wealth preservation law firm.

A graduate of the University of Florida in 2008 Ms. Lastition received her Law Degree in 2016 from the Nova Southeastern University Shepard Broad College of Law. Ms. Lastition has worked in the legal field since 2004 at one time working closely with and representing disabled veterans fighting for their disability benefits from the Veterans Administration. We are incredibly grateful to have Ms. Lastition as a member of the Marquardt Team and we are certain that she will add another layer of success to our quality driven firm. Check out Ms. Lastition’s website https://www.guidinglightlaw.com/ to learn more about why she focuses on wills, trusts, and estate planning and how she takes care of clients.

Tyrone S. Marquardt

Office Manager

Tyrone joined Marquardt Law Firm, P.C. in December of 2014 and currently serves the firm as the Case Manager for Nursing Home Medicaid and VA Aid & Attendance. Tyrone was born and raised in the small town of Alamogordo, New Mexico. He attended Sul Ross State University in Alpine, Texas, where he majored in Business Management. Tyrone has a passion for helping people secure assets for their future, as well as plan for retirement. It is Tyrone’s belief that while helping preserve individual assets is very important, the most important asset you can protect and take care of is yourself! His compassionate attitude is depicted in the professionalism and respect he gives to our clients and their families. Tyrone’s previous work experience includes over 10 years as an Investment Advisor and Insurance Agent with fortune two hundred and fortune five hundred companies and upholds his dedication to assisting and guiding others through his work.

Tyrone played college level baseball while he attended Sul Ross State University and remains very active in the youth sports community with the hope of encouraging the next generation of athletes. He enjoys spending as much time with his family and friends as possible and also has a passion for hunting and all outdoor actives. Tyrone’s attention to detail and his ability to care for others is an outstanding fit as our Case Manager for Nursing Home Medicaid and VA Aid & Attendance.

James Strizak

Client Services

James Strizak joined our team in September 2014 and oversees business development and client services. His duties include but are not limited to client interviews, benefits recommendations, public relations and scheduling public speaking engagements throughout San Antonio, Georgetown, Sun City, Amarillo, and all of New Mexico.

James met Mr. Marquardt in 2010 while James was working for a financial services office. His clients raved about Marquardt Law Firm so much, James applied for a permanent position with the firm. James’ passion for helping Veterans and the elderly began because he was raised as an Air Force dependent. James’ love for his country led him to serve in the Marine Corps infantry for two enlistments and five overseas deployments as a Sergeant. James attended the University of Maryland, Embry-Riddle Aeronautical University and Monterrey Peninsula College all while serving in the Marine Corps. Upon being discharged, he attended St. Mary's University in San Antonio, Texas.

James has been happily married for 26 years to his wife Jennifer and he has four children. He is also a member of the Veterans of Foreign Wars, American Legion and a returning member of the Marine Corps League and 1st Marine Division Association.

Kathryn Granados


Kathryn Granados is a paralegal. She focuses on helping Todd A. Marquardt, Esq. and Brittany L. Lastition, Esq. with estate plans and trusts.

She decided to become a paralegal because she took part of the paralegal course in her younger years and decided it was time to complete it. She decided on being a paralegal as a means of bettering herself, her education and her life.

She enjoys being a paralegal because of the challenge of assisting an attorney, the understanding of fighting for a cause, believing your client deserves justice or just plain assistance in managing the future after they are no longer living. She is passionate about helping and giving to others. There are many who are unable to do for themselves. It takes one helping hand to change a life.

She is a mother of three grown men, one who serves our U.S. Marines as a SSGT/Drill Instructor. They have blessed her with three wonderful grand-daughters. She has a very supportive family and is blessed with good friends who have been her support group for years. They have seen her create goals and have seen her achieve them. She is truly blessed. She enjoys spending her leisure time with friends and family. Just living life to the fullest.  

Maria Simonson-Dingley


Maria Dingley is Marquardt Law Firm’s very own trailblazer for the Georgetown, Texas region. Joining the law firm in November of 2016, Maria is the first member of our satellite office located on Williams Drive in the beautiful city of Georgetown.

Maria loves the Georgetown community and has called Georgetown her home for the past twelve years. Maria is responsible for assisting our attorneys prepare invoices to communicate to our clients what action our staff has taken for them.

Born in Managua, Nicaragua, a calling to be of service to others was instilled in her at an early age. Family and faith are Maria’s main priorities. Maria and her loving husband of 31 years have a son, who is currently attending college. Maria’s faith has guided her to be a light of inspiration and hope to others, whether it is through her Bible sharing and teachings in her community or through her assistance with the elderly or less fortunate in her career.

Maria came to work for the Marquardt Law Firm after her employment at the Housing Authority in Georgetown. During her years at the Housing Authority, Maria helped others by employing the Authority’s mission to provide decent and safe living conditions for less fortunate individuals in the community and to help those less fortunate to become self-sufficient. And, still motivated to be of service to others, Maria is an integral part of our law firm team that helps our clients and their families secure protection and assistance during life’s difficult times as well as plan for future life-changing events.

Khrystianna Villegas

Administrative Assistant

Khrystianna joined Marquardt Law Firm in August of 2017. She serves as an Administrative Assistant, maintaining communication between clients and attorneys, recovering client information, and helping essential documents get into the right hands.

Khrystianna’s customer service career dates back to her high school days and spans multiple companies and positions. She first worked in retail, developing a talent for adapting to clients’ unique needs and situations. In 2017, she graduated high school and her career path led her to come on board with the firm.

Now, Khrystianna uses her talent for prioritizing under deadlines to perform second contacts with clients, gather details about their situations, and transfer that information to our attorneys. She’s an essential part of the consultation process, serving as the link between the initial phone call and the appointment with the attorney.

When she’s not on the phone getting to know clients, Khrystianna enjoys hitting up karaoke bars, cooking at home, and spending lazy days with her boyfriend.

Jessica Zepeda

Administrative Assistant

Jessica joined Marquardt Law Firm on September 11, 2017. She serves as an Administrative Assistant, filing and archiving client matters, scanning documents, calling clients, and helping the team stay organized.

In high school, Jessica was the corps commander of her ROTC drill team. For four years, she developed routines, helped her fellow members, and even earned the Wingman Award her senior year for her dedication to serving others. Jessica graduated with the Rotary Scholarship and went on to hold several job positions that further developed her service skills and empathy. She has been able to interact with a myriad of personalities throughout her career. Working for the Bexar County Court Office, Jessica mentored juveniles as they completed community service hours, helping them determine their lives’ directions.

Now, Jessica serves the clients of Marquardt Law Firm with the same organization and empathy. She connects one-on-one with individuals, keeps detailed logs of the firm’s happenings, and maintains the joyful atmosphere of the office.

Jessica lives with her father, who’s always been there to encourage her that anything is possible. In her free time, she’s replaced ROTC drilling with consistent personal workouts, maintaining a healthy lifestyle for herself just as she takes care of others.

Hannah Zello

Reception Client Services

Hannah joined Marquardt Law Firm in January of 2018. She serves as head of Reception Client Services, managing attorneys’ calendars, taking calls from new clients, and caring for clients who come into the office.

Hannah graduated from Colorado Christian University in December of 2017 with a degree in English. Her career includes several service jobs, which developed her multitasking and organizational skills. Her favorite part of caring for clients is seeing the joy on their faces after a beneficial interaction. She’s had the opportunity to serve others as a waitress, hostess, administrative assistant, and now as a receptionist. One talent she’s used throughout her career is listening empathetically to individual clients to determine what they need emotionally.

Hannah lives with her husband, Joshua, in a cozy apartment. In her free time, she loves writing creative fiction, cuddling cats, and connecting in her local church.

Lynette Montalvo

Records and Database Administrator

Marquardt Law Firm, P.C. welcomes Lynette Montalvo as its new Records and Database Administrator. A native of Edinburg, Texas, Ms. Montalvo relocated to San Antonio in 2013 to pursue a higher education at St. Mary’s University. She graduated with a Bachelor’s degree in English- Communication Arts in December 2016. During her time at St. Mary’s, she worked at the St. Mary’s University Communications Office, and gained internship experience at Entravision Communications and Guide Dogs of Texas.

She has also worked for Harland Clarke Holdings, where she wrote daily communications that were distributed across their entire enterprise of companies which included Valassis and Scantron. In addition, she served as a Media Assistant for the San Antonio Spurs and a High School Sports Statistics Assistant for the San Antonio Express-News.

Ms. Montalvo’s hobbies include cheering on the San Antonio Spurs, and spending quiet time reading. She is interested in learning more about business, estate and other aspects of law.