Hello
Sorry I can't see another son (I tried all children in Brailes with a father called Charles and no surname 1781-1801)so it looks like Henry must be the son of Sarah or Mary .Perhaps they were away in service ,got pregnant and returned home to have the baby.
But if Charles and Ann remained in Brailes ,which they did because they are buried there,there weren't any more children.
I know it's not what you want to hear.
You know you have the right family at least.
Sorry
Ciderdrinker