Hello Alison......
I can't help you with birth/baptism, but have you seen the 1841 census..........
Bretton.......
William Davies / age 1
Samuel Davies / age 6 months
Living with.....
William Davies / age 40
Catherine Davies / age 20
Joseph Davies / age 15
Ed Davies / age 6
Elizabeth Davies / age 5
As you know, ages were rounded up/down by 5 years on the 1841. Could this be the boys, living with grandad and mum ?
Hope this helps
Regards
JeannieR