Jack Hay's Country was identified as 'Maneroo', indicating he was probably a Ngarigo man. John Bulmer described him as a 'Brajerak', a Gunaikurnai word for 'wild men' and a word used to describe Ngarigo people.
The graph displays the other subjects mentioned on the same pages as the subject “Jack Hay”. If the same subject occurs on a page with “Jack Hay” more than once, it appears closer to “Jack Hay” on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.