Alexander Hamilton Sibley (October 17, 1817 – July 10, 1878) was the president of the

Silver Islet Silver Islet refers to both a small rocky island and a small community located near the tip of the Sibley Peninsula in northwestern Ontario, Canada. A rich vein of nearly pure silver was discovered on this small island in 1868 by the Montr ...

Mining Company which operated a

silver Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. ...

mine on the

Sibley Peninsula The Sibley Peninsula is a and peninsula in Ontario, Canada, on Lake Superior. It projects into the lake from Superior's north shore, and separates Thunder Bay to the west from Black Bay to the east.''Sleeping Giant Background Information'', 3. ...

in northwestern

Ontario Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...

, which was purchased from the Montreal Mining Company after they had decided the mine was an "engineering nightmare" and sold it to Silver Islet Mining for $225,000. Sibley was born in

Detroit Detroit ( , ) is the List of municipalities in Michigan, most populous city in the U.S. state of Michigan. It is situated on the bank of the Detroit River across from Windsor, Ontario. It had a population of 639,111 at the 2020 United State ...

in 1817, the son of the first

mayor of Detroit This is a list of mayors of Detroit, in the U.S. state of Michigan. The current mayor is Mike Duggan, who was sworn into office on January 1, 2014. History of Detroit's executive authority During the earliest part of its history, Detroit was a ...

Solomon Sibley Solomon Sibley (October 7, 1769 – April 4, 1846) was an American politician and jurist in the Michigan Territory who became the first mayor of Detroit. Early life: 1769–1815 Sibley was born in Sutton, Massachusetts, the son of Ruth and Reube ...

. He was the brother of the first

governor of Minnesota The governor of Minnesota is the head of government of the U.S. state of Minnesota, leading the state's executive branch. Forty people have been governor of Minnesota, though historically there were also three governors of Minnesota Territory ...

Henry Hastings Sibley Henry Hastings Sibley (February 20, 1811 – February 18, 1891) was a fur trader with the American Fur Company, the first U.S. Congressional representative for Minnesota Territory, the first governor of the state of Minnesota, and a U.S. mi ...

. From 1870 until his death in 1878, Sibley lived in Detroit and spent his summers at the mine. He died in

New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...

in 1878, with William Frue by his side.'Major Sibley's Sudden Death, Stricken with Cerebral Apoplexy at His Hotel-Sketch of the Deceased,' New York Times, July 11, 1878

Notes

1817 births 1878 deaths 19th-century Canadian businesspeople People from Michigan Territory Businesspeople from Detroit 19th-century American businesspeople {{Canada-business-bio-stub, Sibley, Alexander