Lady mayoress is an official female companion to the lord mayor of a major city in the United Kingdom or Republic of Ireland, or a capital city of an Australian state. Traditionally this was the wife of a male mayor.
It is not an elected office. Lady is used here as a title of respect. The lady mayoress accompanies the lord mayor to many events and in the past may also carry out engagements on her own.[1]
As an example, the Leeds Children's Charity states that "it has been the right of every new lady mayoress to become the president of the charity".[2]