From Stamps of the World
Kettering is a town in Northamptonshire, England. It is situated about 81 miles (130 km) from London. Kettering is mainly situated on the west side of the River Ise, a tributary of the River Nene which meets at Wellingborough. Originally named Cytringan, Kyteringas and Keteiringan in the 10th century, the name Kettering is now taken to mean 'the place (or territory) of Ketter's people (or kinsfolk)'