William Henry Jackson, also known as Honoré Jackson or Jaxon, was secretary to Louis Riel during the North-West Rebellion in Canada in 1885. He was married to Aimée, a former teacher in Chicago.

Louis Riel was a Canadian politician, a founder of the province of Manitoba, and a political leader of the Métis people. He led two resistance movements against the Government of Canada and its first prime minister John A. Macdonald. Riel sought to defend Métis rights and identity as the Northwest Territories came progressively under the Canadian sphere of influence.