prince consort
A "prince consort" is a title given to the husband of a reigning queen who does not hold the title of king. This role typically involves supporting the queen in her royal duties and representing the monarchy at official events. The prince consort may have some ceremonial responsibilities but does not have the same powers as a king.
One of the most notable examples of a prince consort is Prince Albert, the husband of Queen Victoria of the United Kingdom. He played a significant role in promoting the arts and sciences during his time and was influential in various social reforms.