Miguel Hidalgo y Costilla (1753-1811), a Mexican revolutionary priest, is considered the foremost patriot of Mexican independence. He led a revolt against Spanish rule that inaugurated a series of military and political episodes culminating in the achievement of Mexican independence in 1821.
Miguel Hidalgo y Costilla was a Mexican Roman Catholic priest who played a crucial role in the Mexican War of Independence from 1810 to 1821. Hidalgo is well known for his "Grito de Dolores" ("Cry of Dolores") speech, in which he demanded the end of Spanish colonial control in Mexico.
This is not the best answer but i hope it helps :/
The group that benefited the most from gaining independence from Mexico are the Tejanos who were the former Americans and has now become the American citizens and had claimed for the American rights and privileges.