The term 'one with the most institutional memory' can be summed up by the word doyenne, which is a French term meaning 'the most senior or experienced person in a particular field'. It is often used to refer to a woman who has achieved a high level of expertise in her field and is respected for her knowledge and experience. The term is also used to describe someone who has been in a particular profession or organization for a long time and is seen as an authority on the subject.