Its boundaries in 1750 were given as “It begins where Cayach Brook goes to the River Rumney by Ystrad  Manerch then along Cayach Brook upwards till it goes to Bargod Taff then along the River Bargod to nant y Garth then along y nant by Craig Vargod Meeting house directly to Funnon Cluide Trauska then along the High way Eastward Towards Pen Ca Mawr till it comes to the way that leadeth from Pen y Brin Ore to Pen yr Hewl Ddu then along that way downwards till it comes to an old ditch that goeth Eastward from the said way near Ca yr Capel then from that ditch to a stone standing upright on the common opposite Mardy Bach House where nant Goch springs out, then along nant goch till it comes to Pen y Garreg Farm then along the hedge between Bryn coch and Pen y garreg  farms directly westward till it comes to the common then along the hedge of Pen y Garreg Farm to a white thorn in the said hedge and a stone on the common by spring head of Killa Brook Between the high way and the hedge then along Killa Brook to Ystrad Manerch afore said whear it goes to Rumney River then along Rumney River to the Entrance of Cayach Brook to it as aforesaid”.