Lord Mayor of York

The Lord Mayor of York is the Lord Mayor, Chairman of City of York Council, first citizen and civic head of York. The appointment is made by the council each year in May, at the same time appointing a Sheriff, the city's other civic head. York's Lord Mayor is second only to the Lord Mayor of London in precedence. The office of Mayor dates back to at least 1217 and was upgraded by Richard II to that of Lord Mayor in 1389.

The Mansion House, York, is the Lord Mayor's home during his or her term of office.

The use of the prefix "right honourable" appears to have been used since the creation of the lord mayoralty. It was confirmed by letters patent dated 1 April 1974, when York became a non-metropolitan district and reconfirmed by letters patent dated 1 April 1996, when it became a unitary authority.

York Mansion House website, which contains a page on the history and lists past Lord Mayors

...
Wikipedia