Nicolás Romero was a Mexican

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 military figure.

He had agricultural and textile businesses in what is the modern-day state of Hidalgo. Upon the outbreak of the Reform War

Reform War

The Reform War in Mexico is one of the episodes of the long struggle between Liberal and Conservative forces that dominated the country’s history in the 19th century. The Liberals wanted a federalist government, limiting traditional Catholic Church and military influence in the country...

 in 1858, he jointed the Liberal forces under Aureliano Rivera.

When Napoleonic France invaded in 1861, he engaged the invaders in guerrilla warfare

Guerrilla warfare

Guerrilla warfare is a form of irregular warfare and refers to conflicts in which a small group of combatants including, but not limited to, armed civilians use military tactics, such as ambushes, sabotage, raids, the element of surprise, and extraordinary mobility to harass a larger and...

, fighting in the states of México

Mexico (state)

México , officially: Estado Libre y Soberano de México is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of the United Mexican States. It is divided in 125 municipalities and its capital city is Toluca de Lerdo....

, Guerrero

Guerrero

Guerrero officially Estado Libre y Soberano de Guerrero is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 81 municipalities and its capital city is Chilpancingo....

, Querétaro

Querétaro

Querétaro officially Estado Libre y Soberano de Querétaro de Arteaga is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided into 18 municipalities and its capital city is Santiago de Querétaro....

 and Michoacán

Michoacán

Michoacán officially Estado Libre y Soberano de Michoacán de Ocampo is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 113 municipalities and its capital city is Morelia...

 under Gen. Vicente Riva Palacio

Vicente Riva Palacio

Vicente Florencio Carlos Riva Palacio Guerrero was a Mexican politician and intellectual....

; there, his exploits earned him the nom de guerre León de la Montaña ("mountain lion"). He was captured by the enemy in Papazindán, Michoacán

Michoacán

Michoacán officially Estado Libre y Soberano de Michoacán de Ocampo is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 113 municipalities and its capital city is Morelia...

, from where he was taken to Mexico City and executed.

Ciudad Nicolás Romero in the State of México and Tiquicheo de Nicolás Romero in Michoacán bear his name.