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Sir John Johnson Manor House Doors Open Cornwall and SDG Counties

Sir John Johnson Manor House

Sir John Johnson (a prominent colonial military leader and administrator) founded Williamstown in 1784 after the American Revolution. He built this manor house – one of the oldest west of Quebec – as well as a gristmill and sawmill. Johnson was responsible for settling disbanded Loyalist soldiers and their families and other refugees from the Quebec border to Prince Edward County.

Tell us your story about this site

  • Parking
  • Partial wheelchair access
  • Washrooms
  • National Historic Site (Canada)
  • Kid-friendly
  • Guided tours available

Contact info

19692 William Street
Williamstown, Ontario
Telephone: 613-347-2356


Year built: Begun in 1784
Architectural style: Georgian
Building type: Historical landmark

Dates/hours open

Saturday August 17 – Sunday August 18, 2019
Saturday and Sunday: 10 a.m. to 4 p.m.

Sir John Johnson Manor House 19692 William Street