Robert Addison Gillespie (1815–1846) was a business man, land speculator, and Captain in the Texas Rangers under John Coffee Hays and Zachary Taylor.
[2] From September 1842 to January 7, 1843, Gillespie held the rank of Private in a Texas Rangers company under John Coffee Hays,[3] and participated in the 1842 Battle of Salado Creek.
[4] From June 1, 1843, to September 30, 1843, Private Gillespie was part of the Hays Spy Company.
[7][8] Gillespie rose to the rank of First Lieutenant for the Hays Texas Rangers roster of February 12, 1845, to September 28, 1845.
The first Ranger to breach the fort at the Independence Hill summit, Gillespie was wounded during the assault on Bishop's Palace of September 22, 1846.