Siege of Tampico
1839 CE.
Shown on the map at 22.255°, -97.869°.
The siege of Tampico occurred during the Mexican Federalist War between the 26 May and 4 June 1839. The insurgents under the command of General Ignacio Escalada were besieged by Centralist forces under the command of General Mariano Arista. Escalada surrendered on the 4 June. The loss of the port was a major blow to the insurgency.
Text from the Wikipedia article Siege of Tampico, licensed CC BY-SA 4.0.