Hi Jamjar,
Thanks so much for your efforts on my behalf, it really is appreciated. It is interesting that it would seem that the milll could be on the site of the present day Falconry.
I have noticed the large family of Nicholsons living at Cotland - my bet is that they are connected but I don't know how yet and my ancestor who lived at the mill does not appear to have any brothers called John.
Also interesting is the Jardine family living at Parks in 1851 - I didn't know that

.
Yes - I have already found the possible Helen farming Totherwald in 1851 but I am not sure it is her, although from memory the only other Helen thrown up in a census hunt doesn't fit the bill. The husband of my Helen, who was farmer and miller at the mill, died in 1850 and according to his Will he died Intestate, and ''the value of Estate is of the value of one hundred pounds Sterling and under the value of two hundred pounds Sterling''. I
think I am correct that in today's terms this is around £8,000. The Will is dated 1853 - 2.5 years after his death. I am not entirely convinced that it is likely that my Helen could within one year of the death of her husband be running a large farm, ......although....... also in the household is Jane Nicholson aged 42, and Helen and her husband Christopher the miller did have a daughter called Jane born 1807 - 2 years earlier than the Jane in the census - and who was baptised in Tinwald (the Jane in the census is born in Mouswald)

Maggie