The reason I wondered if the children might be John's is that banns record in Hopesay in 1835 for John Haines and Maria James - at that time John was a widow and Maria married to Thomas. There was no wedding though.
I'm not sure if Maria would have been able to pull the wool over the vicar's eyes about the children's father at their baptisms in Stokesay or not.I suppose if only Maria went to the church it could be possible!