Tom Mathlong is a charismatic and powerful African revolutionary leader, ostensibly an old friend of Anna’s, who is referenced in passing by characters at various points in the book. When Marion befriends Tommy and decides to become an activist, she asks Anna to help her contact Mr Mathlong, who is imprisoned and unlikely to get their messages. He represents the sort of unflinching, impactful, action-oriented political activism that Anna struggles to find for herself in the book.