It's the right family.
Ribeira Seca had about 3200 people in the 1860s. Today, it has only about 900. I think that the Maria Joaquina (sorry, I mistyped her name in my last email) who is having babies out of wedlock is yours. Back then, probably 3000 people knew who the father was.
The priest should have made a margin note if Jose was Joam. So the question is, are they the same person, or did Maria Joaquina have a couple of babies out of wedlock? The only way to answer this is to do an exhaustive and tedious search. See how many Maria Joaquinas are having babies out of wedlock in that time period and does that Maria Joaquina have the same parents as the record that I found.
But before I do that, I'd go to the baptism book and start with baptisms as close to 23 Jun 1884 as I could get and work my way back in time. The marriage record only said Joao was baptized in R. Seca. It doesn't say when. Maybe his mother couldn't get him to the church for baptism right after birth due to weather, quarantines, or some other reason. Maybe she meant to go back and have him baptized but forgot. So when he went to apply for marriage at the church, they discovered he wasn't baptized (or the record was missing) so they baptized him shortly before his marriage. I have seen that happen.