William Abraham (known as Mabon for his skill as a singer) was a Welsh trade unionist and politician. He was born in 1842 at Cwmavon, Glamorganshire and died in 1922. A leader of the miner's union in South Wales he argued strongly for a system of pay related to the selling price of coal. In 1885 he was elected MP for Rhondda, a position he held until 1918. After the miner's strike of 1898 that pay system was replaced with collective bargaining and he lost popularity in the union. Research William Abraham