You say she went ‘on to have 4 more children…’
Did all the children have the same father?
If they did have the same father, there might have been doubt about the first child’s baptism. (Birth at sea ..)
There could have been a mission at church which prompted mum to reconsider.
Perhaps a change of school, church etc.
heywood, thank you
No, the next 4 children were with a different father, whom she married about 12 months later.
No idea yet what happened to the father of the first 2 (the same man's name was given as the father for both of these earlier sons), but there's every possibility he was working as a Servant for someone in a fighting unit (army). But it doesn't say 'father deceased' on the baptism register... and if he hadn't been around in early 1820, surely it would? or maybe not?
Both baptisms were at exactly the same church, same ministers etc.
But 3 months apart.

While you're here, what exactly would a "Servant" be, in an army context? (Possibly a Scottish regiment?)
D