The Saxon Cross Church at Dewsbury was written by John Ryley Robinson (Tweddell wrote about him in Bards and Authors of Cleveland and South Durham 1972 (the original book can be downloaded from this site - find the post with the free download link in the side menu).
Dewsbury is a minster town in the Metropolitan Borough of Kirklees, in West Yorkshire, England. It is to the west of Wakefield, east of Huddersfield and south of Leeds. It lies by the River Calder and an arm of the Calder and Hebble.
This photograph shows part of a Viking grave marker of a type known as a 'hogback'. The name was given because the complete item would have had a curved upper ridge resembling the line of a hog's (a pig's) back.