Samuel Sprigg "Red" Carroll (September 21, 1832 – January 28, 1893) was a career officer in the United States Army who rose to the rank of brigadier general of the Union during the American Civil War.

Helen was the eldest child of William Bennett, a prominent merchant born in Maryland, and his wife Catherine DuBois.

Col. Jonathan H. Lockwood counter-attacked oncoming Confederates from North Carolina and the Louisiana Tigers from Jubal Early's division on the slopes of Cemetery Hill, driving them back in the growing darkness.

When the war ended, Carroll stayed in the postbellum Regular Army, serving in the inspector general's department.

In late January 1893, Carroll contracted pneumonia and died six days later at the age of 60 at his country residence, "Belleview", near Takoma Park, Maryland.

He was buried with full military honors in Oak Hill Cemetery in Georgetown, Washington, D.C.[citation needed] In 1861, Fort Carroll (a.k.a.