Thank you to those who have checked for me, much appreciated. I am fairly confident that the Ludlow GRO Death Registration is correct as the year of birth (c.1820) is about right and Ludlow RD covers the Cainham area. And the burial reference for the Knowbury burial is from the England Select Deaths and Burials 1538-1991 which I understand is from the LDS records. It gives these details which seem quite specific. I had also searched on Find My Past, FreeBMD, GRO and found nothing for Thomas's death although there are entries for other members of the family in Knowbury after 1900.
Name Mary Hopewell
Gender Female
Death Date 1907
Burial Date 27 Mar 1907
Burial Place St. Paul, Knowbury, Shropshire, England
I'm grateful for all your help, it seems that Thomas's death is going to continue to be elusive!