One of the factors which influenced the growth of Sennybridge was the establishment of the Neath and Brecon Railway which opened a station in the adjoining village of Defynnog in 1867.[1] The promoter and contractor of the railway, John Dickson, also made a start on constructing a railway north from Sennybridge that would have linked the Neath and Brecon Railway to the Central Wales Line at Llangammarch Wells but work was suspended on his bankruptcy in 1867 and never resumed. The partially completed earthworks can still be seen in the countryside north of Sennybridge.
Climate
Climate data for Sennybridge, Elevation: 307 m (1,007 ft), 1991–2020 normals
Sennybridge's primary school, which houses a Welsh Language Unit, utilises the old Secondary Modern buildings in the village. Although the school is in Sennybridge, it continued to be named Defynnog Primary School until the 1980s when its name was changed to Sennybridge Primary School.
Notable people
William Rees-Thomas CB FRCP FRSM (1887–1978), a Welsh psychiatrist was born in Senny.
Tom Rees, born in 1895, at Cefnbrynich, near the town, was the first official victim of the "Red Baron"—German flying ace Manfred von Richthofen.
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