Saturday marks 173 years since the Robinson Huron Treaty was signed.
The Robinson Huron First Nations, which include the Magnetewan, Wasauksing, Shawanaga and Henvey Inlet First Nations, will hold a ceremony to commemorate the signing in 1850.
The event is taking place in Sault Ste. Marie.
Representatives of the Robinson Huron Treaty Litigation Fund will speak about the importance of the Treaty, the annuities case and the proposed settlement.
Speakers at the event also include both Gary Anandasangaree, federal Minister of Crown-Indigenous Relations and Greg Rickford, provincial Minister of Indigenous Affairs.
In June, the 21 Robinson Huron Treaty First Nations and the Governments of Canada and Ontario announced a proposed settlement for past compensation.
Officials say the final settlement agreement is expected to be signed later this fall, once all approvals are given.
***With files from Richard Coffin