Perth is a town in the eastern portion of Southern Ontario, Canada. It is located on the Tay River, 83 kilometres (52 mi) southwest of Ottawa, and is the seat of Lanark County. The town was established as a military settlement in 1816, shortly after the War of 1812. Many of the first settlers were military veterans on half pay, while others were military veterans from France, Germany, Poland. Italy, Scotland or Ireland who were offered land in return for their service.