A marquess is a noble title in the British peerage system, ranking above an earl and below a duke. The title originated in the Middle Ages and was typically granted to nobles who governed border territories, known as marches. This role was important for maintaining security and order in regions that were often vulnerable to invasion.
In the hierarchy of British nobility, a marquess is addressed as "Lord" and his wife as "Lady." The title can be inherited, usually passed down through the male line. Notable marquesses include the Marquess of Bath and the Marquess of Salisbury, who have played significant roles in British history.