Works Battalion, King's Liverpool Regiment David Watts Morgan, CBE, DSO, JP (18 December 1867 – 23 February 1933), who later in life hyphenated his name to Watts-Morgan,[1] was a Welsh trade unionist, a Labour politician, and a Member of Parliament (MP) from 1918 to 1933.

Morgan was awarded the Distinguished Service Order for bravery at the Battle of Cambrai in 1917,[2] earning him the nickname "Dai Alphabet" in South Wales.

In 1880 Watts Morgan became a checkweighman at the newly opened National Colliery in Wattstown, a responsible position that involved tallying the weight of coal extracted by each miner when it reached the surface.

[1] From checkweighman Watts Morgan rose to the position of district miners' agent in 1898, becoming a member of the Rhondda Labour and Liberal Association (RLLA).

[4] In 1899 the Porth and Cymmer seat for the Glamorgan County Council (GCC) fell vacant, and Watts Morgan was seen as a viable candidate from both Liberal and Labour standpoints, but was surprisingly defeated at the by-election by local timber merchant David Jenkins.

The next year Jenkins declined to stand for re-election, but the miners' district committee refused Watts Morgan time off from his agent's duties and the seat was won uncontested by colleague James Baker.

"[9] In March 1915, a committee of Rhondda figures presented Morgan with a cheque for 100 guineas to mark his contribution to recruiting, and the Western Mail named him "The Organiser of Victory".

[12] Watts Morgan was three times Mentioned in Despatches,[1] and on 4 May 1918 was awarded the Distinguished Service Order for leading his pioneer unit in a counter-attack against German forces that were breaking through British lines.

[9] Despite the Oxford Dictionary of National Biography reporting Watts Morgan being promoted to lieutenant-colonel on 8 March 1919, his retirement from the forces, the London Gazette entry of May 1919 describes him as major.

[1][20] Not a regular speaker in the House, Watts Morgan busied himself with work on various committees, dealing mainly with gas, electricity, river pollution, the Home Office and the Police Council.

[21] Watts Morgan made it clear that he would defend the interests of ex-servicemen and those injured in industry; he opposed the temperance demand for the local veto.

[23] In the 1929 election his main rival was well-known local Liberal Dr. R. D. Chalke, but the biggest interest came from the first communist challenger in the Rhondda, Arthur Horner.

[24] Watts Morgan described Horner as "the emissary of the blood-stained Comintern of Russia ... working to break down the democratic Government and Trades Union organization of this country."

He was a member of several organisations including the Freemasons', Ivorites' and Foresters' friendly societies and was president of the Rhondda and Pontypridd district of the British Legion.