Gunaikurnai man who provided information to Howitt about Gunaikurnai practices. Howitt included an image of Tankowillin in his 1904 book (see p. 345). Within Howitt and Fison's first book there is a differentiation between Tankowillin senior and junior, but this is not mentioned in his 1904 book.
The graph displays the other subjects mentioned on the same pages as the subject "Tankowillin". If the same subject occurs on a page with "Tankowillin" more than once, it appears closer to "Tankowillin" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.