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About Us

What You Need To Know About Our Florida Law Firm

The law firm of Aguilar & Sieron, P.A., sets the standard for excellence when it comes to top-notch legal advice in the Jacksonville, Florida area. Attorneys Mark Sieron and Bob Aguilar began practicing law together in 1987, developing a firm that has a well-earned reputation throughout North Florida for providing exceptional legal services for clients facing a wide range of legal issues.

Our firm is like a family with most of our staff having worked together for over 25 years. Our staff works this way because we're active members of the Clay County community. We don't just work here. We are involved in the Clay County and Northeast Florida community, often volunteering our time for local charities and causes. That's why we take the cases we handle so seriously. Our clients are more than just customers. They're our friends and neighbors.

A former prosecutor, Mark Sieron has more than three decades' legal experience. The same is true for Bob Aguilar, who has been practicing law in Florida since 1978. This extensive experience allows our law firm to bring a wealth of knowledge to every case we handle at our firm.

Why Choose Us?

Experience and knowledge matter. But what really sets us apart from other law firms is our commitment to our clients' cases. We never take anything for granted. We work hard to find the facts people need to build strong legal cases, especially when it comes to those facing serious criminal charges. Our approach includes:

  • Taking the time to listen to clients
  • Explaining all the legal options available to clients
  • Working closely with clients to develop a unique legal strategy
  • Effectively implementing that strategy in a timely manner
  • Analyzing arrest reports and other critical documents
  • Taking the sworn testimony of critical witnesses and visiting the scene of the arrest.
  • Consulting with experts
  • Filing legal motions to suppress evidence or dismiss charges, when applicable

We leave no stone unturned in pursuit of justice. Find out how our law firm can help you. Contact us and schedule an appointment with one of our experienced, knowledgeable attorneys. The sooner you do so, the sooner we can get started on your case.

Attorneys

Office Staff

Joann Pernaci

Joann is an Administrative Assistant and has been with the firm for over 25 years. She was born in Philadelphia and raised in Miami. She attended Miami-Dade College and the University of Florida.

Joann and her husband Sam, married 43 years, moved to Clay County in 1983. They have two children and 3 grandchildren. Prior to working for the firm, Joann was a private business owner. She is a University of Miami football fan and a Jaguars season ticket holder. Her true passion is the ocean and she shares that passion with her family.

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Kathy Clanton

Kathy is a Florida Registered Paralegal and serves as Mark Sieron's assistant. She attended Indian River State College in South Florida and has been with the firm for 24 years. Prior to joining the firm, she served as an Executive Assistant for Alliance Mortgage Company.

She and her husband Jack, a retired lieutenant with the Clay County Sheriff's Office, were high school sweethearts and have been married for over 30 years.  They have lived in Clay County since 1984 and have two daughters. Despite being born in Chicago, Kathy and her family are huge Green Bay Packer fans as evidenced by their dogs named Lambeau and A.J. (Hawk).

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Jennifer Lavaron

Jennifer joined the firm in February of 2016 as Bob Aguilar's paralegal.  She has worked in the legal field for over 10 years with expertise in family law and general litigation.  Jennifer has served in the United States Marine Corps and the Florida Army National Guard.

Jennifer, a Connecticut native, is married to husband Gary.  They met while in the Marine Corps and have been married for 14 years.  They have two children and enjoy spending time on their boat and fishing.

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