Chatsworth is a township in south-western Ontario, Canada, in Grey County, located at the headwaters of the Styx River, the Saugeen River, the Sauble River, the Bighead River, the Spey River, and the old Sydenham River. The current township was formed in late year 2000 with the almagation of Holland Township, Sullivan Township, and the village of Chatsworth. The first white settlers arrived in this area in the early 19th century and a significant amount of settlement was underway in mid-to-late 1800's. Canadian suffragette and activist Nellie McClung was born in the town of Chatsworth. The Sullivan Township area has a large Amish population.