Viceregal consort of Canada

The viceregal consort of Canada is the spouse of the serving governor general of Canada, assisting the viceroy with ceremonial and charitable work, accompanying him or her to official state occasions, and occasionally undertaking philanthropic work of their own. As the host/hostess of the royal and viceroyal residence in Ottawa, the consort, if female, is also known as the chatelaine of Rideau Hall.

Source: Wikipedia — Viceregal consort of Canada (CC BY-SA 4.0)