After decades in the business, Susan Brown is the kind of actress with a career measured in decades rather than seasons. 'The Iron Lady' is the other credit most often cited. The oldest credits belong to a different era of the industry. Drama is where the largest part of the work sits. Neither the cinema nor the television half of the career can be called the side project. On television, 'Game of Thrones' is the work that stuck — Septa Mordane, specifically.