The Pioneer Helmet and the Benty Grange helmet are linked because of A simple iron boar crest.
 A simple iron boar crest adorns the top of this helmet associating it with the Benty Grange helmet and the Guilden Morden boar from the same period, and descriptions in the poem Beowulf. 
The Benty Grange helmet is an archaeological artefact excavated by Thomas Bateman on 3 May 1848 from an Anglo-Saxon tumulus (or "barrow") at the Benty Grange Farm in the civil parish of Monyash in the English county of Derbyshire. 
