Ontario's lieutenant-governor Elizabeth Dowdeswell to be sworn in during fall ceremony

Elizabeth Dowdswell smiles after being introduced by Prime Minister Stephen Harper as the next Lieutenant-Governor of Ontario in Ottawa, Thursday June 26, 2014. (Adrian Wyld / THE CANADIAN PRESS)

TORONTO -- The date has been set for Ontario's 29th lieutenant-governor to be officially installed in her new post.

Elizabeth Dowdeswell, a former undersecretary general of the United Nations with a long public service record, will be sworn in Sept. 23, during a ceremony in the province's legislative chamber.

Her appointment was announced last month by Prime Minister Stephen Harper, who praised her "wealth of expertise" and her work promoting sustainable development in Ontario and across the country.

Dowdeswell is currently CEO of the Council of Canadian Academies and previously lived in Saskatchewan, where she was a teacher.

Both Premier Kathleen Wynne and current Lt.-Gov. David Onley say they look forward to welcoming Dowdeswell to her new role.

Onley, who has been lieutenant-governor for seven years, will remain in the post until Dowdeswell's installation.