William Mattice was a merchant and political figure in Canada West.

He was born in Cornwall

Cornwall

Cornwall is a unitary authority and ceremonial county of England, within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of , and covers an area of...

 Township in Upper Canada

Upper Canada

The Province of Upper Canada was a political division in British Canada established in 1791 by the British Empire to govern the central third of the lands in British North America and to accommodate Loyalist refugees from the United States of America after the American Revolution...

 in 1798, the son of United Empire Loyalists. He started work in Toronto

Toronto

Toronto is the provincial capital of Ontario and the largest city in Canada. It is located in Southern Ontario on the northwestern shore of Lake Ontario. A relatively modern city, Toronto's history dates back to the late-18th century, when its land was first purchased by the British monarchy from...

 but returned to Cornwall

Cornwall, Ontario

Cornwall is a city in Eastern Ontario, Canada and the seat of the United Counties of Stormont, Dundas and Glengarry, Ontario. Cornwall is Ontario's easternmost city, located on the St...

. Mattice was a merchant and also acted as agent for the Bank of Montreal

Bank of Montreal

The Bank of Montreal , , or BMO Financial Group, is the fourth largest bank in Canada by deposits. The Bank of Montreal was founded on June 23, 1817 by John Richardson and eight merchants in a rented house in Montreal, Quebec. On May 19, 1817 the Articles of Association were adopted, making it...

 at Cornwall. He served as mayor in 1849 and 1860 and was also a colonel in the local militia. He represented Stormont

Stormont County, Ontario

Stormont County area is a county in the Canadian province of Ontario.Stormont was created in 1792, however, it was settled seven years earlier in 1785. Veterans of Loyalist regiments were among the first settlers...

 in the Legislative Assembly of the Province of Canada

Legislative Assembly of the Province of Canada

The Legislative Assembly of the Province of Canada was the lower house of the legislature for the Province of Canada, which consisted of the former provinces of Lower Canada, then known as Canada East and later the province of Quebec, and Upper Canada, then known as Canada West and later the...

 from 1851 to 1857.

His son, William D. Mattice

William D. Mattice

William D. Mattice was a political figure in Canada West. He represented Stormont in the Legislative Assembly of the Province of Canada from 1858 to 1861 as a Reformer....

, also represented Stormont in the Legislative Assembly.