Treborth stands almost on the south bank of the Menai Strait, midway between the Britannia Bridge and the Menai (suspension) Bridge. The house was built for Richard Davies, who built a timber importing and shipping business and later served as MP and Lord Lieutenant of Anglesey. The house was built in the 1870’s when the private gasworks would have been built at Treborth Farm, a short distance to the east. The private gas works would have lit the Hall with gas light. A single gasholder is shown on the OS of 1888 and 1913, marked as gasometer and visible until the 1959 OS map.