Tam is the husband of Hildy. He is a very minor character in The Knife of Never Letting Go. He lives in his settler ship home with his wife. It is the nearest house to Prentisstown mentioned in the book and it is on the outskirts of Farbranch.
Tam is the first Man with Noise that Todd and Viola meet outside of Prentisstown, and is symbolically important to Todd's and Viola's relationship because it assures them that Viola will not die from the Noise Germ (as had been assumed until that point in the book).