gwelf, a city in Wellington co., province of Ontario, Can., on the Speed River and on the Grand Trunk and Canadian Pacific railroads. The river here has a fall of 30 feet, and furnishes power for organ and piano factories, flouring mills, iron foundries, woolen mills, rolling mills, sewing machine, furniture and farm implement factories. The surrounding country is agricultural and is also notable for stock raising. The town was first settled in 1827 and became a city in 1877. Population in 1909, 14,060.