I can't give you any info at the moment on George and Emily Copeman, nor James and George, but from 1851 census of Mattishall, Norfolk see that Edward Whiterod, 40, a blacksmith and wheelright b. Mattishall, Norfolk, had married (probably for second time).His wife was Maria Sophia Whiterod 29 b. E. Tuddenham, and they had Maria Baker Whiterod 13 (who might have been the child of his previous marriage), Elizabeth 9, Edward 5, all b. Bawdeswell, Frances 2 born Mattishall. There was also a 'son-in-law' Henry Sheldrake aged 7, b. Gressenhall which suggests that this was possibly a previous child of Maria's - who would then be Edward's son under the law. The fact that Edward was born at Gressenhall suggests to me that at the time of his birth Maria Sophia might have been a single mother in the workhouse there - now the Norfolk Rural Life Museum and one of the county's visitor attractions.
My supposition re Maria being Edward's second wife is borne out by Mattishall Primitive Methodist baptism register.On 20th Sept. 1835 Maria d. of Edward Whiterod, Blacksmith and Rhoda Whiterod late Baker was baptised.So it looks as if Elizabeth aged 9 might have been Rhoda's child as well, with the possibility that Henry Sheldrake 7 was Maria Sophia's, followed by Edward 5 - thus there would have been up to three years before Edward remarried
I will let you know if and when I discover whether or not I'm right when I have time to do more.