Hello Geoff.
Here are a couple of gravestone inscriptions for Nelson.
I think they may be part of your family.
In loving memory of our dear mother and father, Ann Nelson of Crook, died August/11/1930 aged 54 years.
Thomas Nelson, died November/30/1941 aged 72 years.
In loving memory of Margaret Nelson, the beloved wife of Thomas nelson of Wheatbottom, Crook, who died August/6/1895 aged 24 years.
Adam