telling Jones, Idris, and Dai, that the closest active volcano to the now extinct "Smoke Hill" is in southern Italy. Mr Mervin The local bank manager. He only appears in a few episodes; his most notable appearance is his and Jones's adventure to find more half-crowns for the gas meter powering "Smoke-Hill". As this episode takes place when decimalisation occurs, Jones must inform Idris and Co. that there are no more half-crowns in Wales and that "you have had the lot". They go and find in a small shop, an old tin teapot full to the brim with half-crowns. "Smoke-Hill" is gas fired for the final time until the dragons go to Mr Dinwiddy and his geothermal heated cave. Mrs Griffiths Mrs Griffiths is a member of the Welsh Antiquarian Society and a passionate believer in Dragons. She first came to seeking Jones the Steam in hopes of finding Idris the dragon, after hearing that dragons had been sighted in Llannyog. Idris had already run away by this point after learning that people were looking for him so Jones misled Mrs Griffiths into giving up the search by pretending to be an insane person who spoke to railway engines (Ivor enhanced Jones' performance by not blowing his own whistle). When Idris' home Smoke Hill lost its heat, Jones and Ivor took Idris to see Mrs Griffiths in her shop in Llanmadd. After seeing Idris and his brethren, and Ivor's self-whistling, Mrs Griffiths apologises to Jones for thinking him mad and agrees to help the dragons. Mrs Griffiths and her fellows at the Antiquarian Society hire Mr Hughes the Gasworks to fit out Smoke Hill with gas heating and in the series one finale Smoke Hill, now a gas-fired volcano, is reignited and all the characters sing in gladness. However, the gas-heating includes a gas meter that only takes half-crowns, which are no longer "legal tender". On a few occasions, the gas meter runs out and Jones and Ivor have to search high and low for more half crowns. Eventually, they use up all the half crowns in their part of Wales so they return to Mrs Griffiths for help, but Jones leaves Ivor alone in a siding while he speaks to Mrs Griffiths and two of the dragons, who were in Ivor's firebox, decide to fly about the town. They come across a statue of St. George famously slaying a