As far as I can tell they are meant to be Miguel Hidalgo and Ignacio Allende, but even the narration omits naming names, calling Hidalgo “the old, charismatic priest”.
This is more a complaint to the developers, not “asking for help” from the community. The mods moved the topic.
Hi there. You might be interested in reading this This Historical Research Behind the Mexico Civilization - Age of Empires
That just confirms their identities, but doesn’t explain why they’re not named in the scenario.