No. 5 "Mona" (from the Latin name of the Isle of Man) arrived on the island in 1874 for the opening of the Port Erin line. No. 6 "Peveril" (named after a character in Sir Walter Scott's novel "Peveril Of The Peak") was of a similar design and arrived a year later, working the Peel line for many years. Both were built by Beyer, Peacock and Company of Manchester with the Isle of Man Railway's usual 2-4-0 wheel arrangement.
Both locomotives stil exist, though neither is in working condition. "Peveril" has been cosmetically restored and is on display in the railway museum at Port Erin.
