Great, so my reading comprehension isn't as bad as I feared. One last question on this particular couple since they've managed to throw up a lot of ancestral curveballs.
In researching Maria's children, I know that she had a son named Manuel who was born around 1777 according to his death record. I was able to locate a baptism record for a Manuel born in February 1779 who was listed as a foundling left on someone's doorstep. This would have been about a month before Maria's first (later invalid) marriage.
Here's where I'm admittedly going out on a bit of a research limb: The margin note for this baptism record is largely obscured by the book's binding. However, I *think* I can just make out the partial words "Antonio de Aguiar and his wife Maria dos Anjos" in the margin and, at the bottom, the date May 1781. If I'm not seeing just things then these names and dates would all correspond to Maria's second (valid) marriage.
Baptism Record (Top-Left):
Is it possible that this couple had Manuel out of wedlock and then had a friend or neighbor baptize him as a foundling only to reclaim him later when they were legally married, or am I just seeing what I want to see and there's really no evidence that this ever happened? I'm not sure what the common practice was in those days for children born out of wedlock and if this scenario ever occurred.