He attended the secret meetings organized by Josefa Ortiz de Domínguez, where the possibility of an independent Mexico was discussed.

Allende was born on January 21, 1769, to a wealthy Spanish criollo family in San Miguel el Grande in Guanajuato, Mexico.

The rebel army quickly captured the town of Dolores and marched towards San Miguel el Grande, where Allende obtained the support of his cavalry regiment.

As a consequence of the rebels' defeat in the Battle of Calderón Bridge, the leadership of the Revolutionary army demanded the replacement of Hidalgo as their leader.

[5][6] The rebels, however, were ambushed at the Wells of Baján due to the betrayal of Ignacio Elizondo, leading to the capture of Allende, Hidalgo, and several other commanders.

His body was decapitated and his head taken to the Alhóndiga de Granaditas where it was shown to the public inside a cage hung from one corner of the building.