Sorry for my writing error. I miswrote - "he is not there, on the 1881 census"
Yes, he is on the 1871 Census - aged 4
And on the 1881 Census, he is not listed, but the other 5 sons are. The eldest son, Henry has moved out.
and on the 1911 Census, there are 5 children still living and 2 who have died.
Thanks for pointing out my error and for your assistance.
Sharon