Nashville/ Crime & Emergencies

Hendersonville Man, 37, Accused of Stabbing Ex-Girlfriend's Boyfriend in Gallatin

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Published on October 30, 2026
Hendersonville Man, 37, Accused of Stabbing Ex-Girlfriend's Boyfriend in GallatinBrookhaven Dr. — Reported Altercation Area
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Thomas Adam Blackwell, 37, was arrested and charged with aggravated assault after a man he is accused of stabbing suffered a partially collapsed lung. Blackwell was booked into the Sumner County Jail, and his bond was set at $400,000.

The case stems from an October 18 confrontation in the Brookhaven Drive area of Gallatin between Blackwell and his ex-girlfriend’s new boyfriend, according to Main Street Media of Tennessee. Authorities said Blackwell stabbed the man. Court records cited in the report also indicate that Blackwell’s ex-girlfriend had separately reported that he followed and harassed her.

The man told police he was struck in the left side of his chest and did not see Blackwell carrying a weapon, according to the court records cited in the report. He did not realize the extent of his injury until after leaving the scene.

Victim's Injuries Surfaced After He Left the Scene

After leaving, the man began having chest pain and noticed what appeared to be blood on his shirt, the report states. Doctors later confirmed he had a stab wound to the chest that caused a partial lung collapse.

The report says Sumner County Sheriff’s deputies who spoke with the man and his girlfriend saw blood and a hole in his shirt consistent with the injury he described.

Warrant, Arrest and Pending Court Date

A warrant was issued charging Blackwell with aggravated assault involving serious bodily injury. He was arrested in Sumner County on October 21 and booked into the jail, where he also had outstanding warrants for failure to appear and multiple traffic violations, Main Street Media reported.

Blackwell was scheduled to appear in General Sessions Court on November 6, according to the report.

What the Court Information Establishes

According to the Sumner County Circuit Court, General Sessions Court handles misdemeanor cases and preliminary hearings in felony cases. The court says felony criminal cases are heard in Sumner County Criminal Court. Those court pages describe the courts’ roles but do not confirm a case-specific date or the status of Blackwell’s next hearing. The November 6 appearance date reported above is not independently established by the cited court information.