Criminal Defense Law Firm
Clay County and Northeast Florida
Call Now 904-264-6000 Criminal Only 904-707-1596 Free Case Consultation
Respect Experience Service

Your Freedom Matters

A Northeast Florida Criminal Defense Law Firm Focused on Your Legal Needs

Being charged with drunk driving or another crime in Florida can have serious consequences. You can be put in jail. You can have your car impounded. You can be fined hundreds or thousands of dollars. While you're behind bars, you can easily lose your job. And if your criminal charge turns into a conviction, you might have a hard time finding a job in the future due to your criminal record. That’s why you need an experienced criminal defense attorney.

Attorney SieronAttorney Sieron 30 Years Reputation

We understand the seriousness of your charges. You should also not have to face a criminal investigation without the assistance of a lawyer from our firm. That's why we want to help. At Aguilar & Sieron, P.A., our attorneys are committed to fighting for the rights of people charged with a serious crime in Clay County or elsewhere in Northern Florida. We know what's at stake and we're eager to work with you.

Free Case Consultation

What our
clients say

“Mark is the best!”

- N.R.

“Mark is an outstanding Attorney! He has handled multiple issues for me and my family. Always have outstanding results.”

- M.C.

“Mark Sieron is a great criminal defense attorney.”

- M.B.

“Mr. Sieron, I thank you from the bottom of my heart for the legal services you provided for me and my family. You worked a miracle and really saved my life.”

- T.B.

“Mark, we would like to express our deep appreciation for the diligence you performed…Your professionalism and knowledge give us great assurance…Thanks for all you have done.””

- C.M.

“Mark is an outstanding attorney! He has handled multiple issues for me and my family. Always have outstanding results. Don't go anywhere else in Clay County for legal representation.”

- T.S.

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Meet Our

Attorney Mark Sieron began his legal career working as a prosecutor in Florida. He and fellow attorney Bob Aguilar have built their law firm into one of the most highly regarded legal teams in the state.

About Us

Our attorneys have
more than 69 years of
combined legal experience.

We Respect
Your Needs

Being a top-notch criminal defense lawyer involves being attentive to your legal needs. Instead of telling you what to do, we take the time to find out exactly what happened. We then explain all the legal options available to you. That way, you can decide what you want us to do on your behalf.

DUI Overview
DUI Charges
Drug Charges
Criminal Defense

Once you decide on a course of action, we will immediately get straight to work on your case. Often, strict deadlines exist when it comes to DUI and other criminal charges. And if we miss them, you could miss out on your opportunity for justice. That’s why it’s so important to retain an experienced drunk driving attorney.

View Our Firm History
  • 1979
  • 1981
  • 1984
  • 1985
  • 1987
  • 2012
  • Today

We're Honored To Serve You

Our legal team takes great pride in working equally hard for all clients. That's why we want to meet with you as soon as possible. We believe you deserve to be treated with dignity and respect. And we would be honored to serve as your legal counsel.

You often only have one opportunity for justice in DUI defense and other criminal cases. That's why it's important that you have an experienced legal team working for you. That's why you need Aguilar & Sieron, P.A. We have a strong record of success. We know how to win.

Results Matter Here

Florida Association of Criminal Defense LawyersNational Association of Criminal Defense LawyersMartindale-HubbellTop One PercentTop 100 Trial LawyersSuper Lawyers

Free Case Consultation

When you need a drunk driving lawyer, take action right away. Contact us and schedule an appointment at our Green Cove Springs office. We can also meet anyplace else that's convenient for you. Simply contact our law firm and discover what we can do for you. You can reach us 24 hours a day, 7 days a week. We proudly serve Clay County, St. Johns County, Jacksonville and communities throughout Northeast Florida.

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