 No firm conclusions have been reached here as to what personal qualities Taylor Mill possessed, what if any philosophical works she authored or co-authored, or how much influence she exercised over Mill’s philosophical career. All that has been attempted is to present the wide range of answers that have been given to these questions. The available evidence may be too sparse and too contradictory for us ever to arrive at definitive answers. Taylor Mill may therefore be destined to remain an essentially contested figure in the history of philosophy.