Welland County is a historic county in the Canadian province of Ontario. The county was formed in 1845 from Lincoln County. The county was named from the Welland River. The river got its name from John Graves Simcoe who named it after the River Welland which forms a border of Lincolnshire, England. Niagara Falls, and the Townships in this count…Welland County is a historic county in the Canadian province of Ontario. The county was formed in 1845 from Lincoln County. The county was named from the Welland River. The river got its name from John Graves Simcoe who named it after the River Welland which forms a border of Lincolnshire, England. Niagara Falls, and the Townships in this county were among the earliest settlements in Upper Canada.