I have recently been researching the Allnutt family in Amersham/Coleshill.
A cousin of mine has your George Allnutt and family as his relative however, I believe this research is incorrect and his relation, Alfred Allnutt born 1855 in Amersham, is the son of another Allnutt related to George but not George himself.Alfred's daughter Mabel Ellen Allnutt marries my distant cousin Henry William Edwards in 1910. I would be interested if you have any further research around George Allnutt and would be prepared to share it.
I have extracted the 1871 and 1891 Census information for George Allnutt and his family and would be happy to send this to you if you do not already have it. incidentally, I believe your George Allnutt was born in 1818, not 1830 which was when his wife was born.I have also found their likely death references