Other experiments in inductive telegraphy were made by Preece, aided by the officials of the British Postal Telegraph Service, in Glamorganshire in 1887; at Loch Ness in Scotland in 1892; on Conway Sands in 1893; and at Frodsham, on the Dee, in 1894.
Among other occurrences of the name of Avon in Great Britain there may be noted - in England, a stream flowing south-east from Dartmoor in Devonshire to the English Channel; in South Wales, the stream which has its mouth at Aberavon in Glamorganshire; in Scotland, tributaries of the Clyde, the Spey and the Forth.
From Macclesfield a descent was made on Manchester; from Oakengates in South Shropshire came extensions to Herefordshire, Glamorganshire and Wiltshire, where the famous Brinkworth circuit was established.
The Glamorganshire canal, opened in 1794, runs from Cardiff to Merthyr Tydfil, with a branch to Aberdare.
The only place of this name we know is Daventry, but it seems more probable that Patrick's home is to be sought near the Severn, and Rhys conjectures that one of the three places called Banwen in Glamorganshire may be intended.