Annwyl Mrs. John,As far as I can make out the area at the back of the General Post Office in Caernarfon around the turn of the 18th/19th century was called SMITHFIELD and was mainly open ground owned by Richard Garnons Esquire, who gave his name to Garnons Street. As you can imagine much of the town at that time was agricultural land and there were several blacksmiths in the town and a person called Robert Jones had a Smithy where the GPO is today. Parish Registers for Llanbeblig record several people having been buried in the cemetery as being residents of SMITHFIELD.At the rear of Pool Street there were other blacksmiths and even the grandfather of the well known Choirmaster and Conductor John Williams (Cor Mawr 1856 - 1917)was a blacksmith and composed a hymn tune called POOL STREET.It was not until after the building of Ebenezer Chapel in what is now called CHAPEL STREET in 1826 that the area was developed  and adopted that name and also NEW STREET and GARNONS STREET were built in the 1830's and beyond.In view of the above, is it, therefore, not reasonable to believe that TRE or TRE'R GOF was the  name local people used for the English name for the area viz, SMITHFIELD?

Cofion,

T. Meirion Hughes