15 Amazing Facts About Bedlington Terriers You Probably Never Knew By Allen Abby - One of their noble fans was Lord Rothbury, whose estate was located in Bedlington in the county of Northumberland. For a time, they were known as Rothbury terriers, but eventually, the name Bedlington stuck. The first dog to actually be called a Bedlington Terrier, in 1825, was Ainsley’s Piper, owned by Joseph Ainsley of Bedlington. Please follow and like us: