Thomas C. McCullough, a male guard age 40, was mortally wounded during an incident at the New Castle County Workhouse near Greenbank/Prices Corner, Delaware, on March 23, 1910. According to contemporary accounts, a prisoner seized a guard's service revolver during the morning routine as inmates were being taken to breakfast, shot that guard twice, and then fired at close range at Guard Thomas C. McCullough striking him in the abdomen. He was transported to Delaware Hospital in Wilmington, where he died three days later; the agency records his end of watch as March 26, 1910.
The assailant, identified in sources only as a prisoner within the workhouse, was shot and mortally wounded by other responding guards at the scene. Because the gunman died from those wounds, there was no subsequent arrest recorded. The other shot guard survived his injuries.
Memorial listings corroborate the core details of the event and location, noting that Guard Thomas C. McCullough was killed in connection with the March 23, 1910 shooting in Greenbank, Delaware. These sources frame the killing as part of a custody disturbance inside the county workhouse rather than an external crime scene.
Public memorial databases echo the above timeline, identifying Guard Thomas C. McCullough as a Delaware correctional officer who lost his life following the March 23, 1910 attack at the New Castle County Workhouse in the Greenbank area.
