At the age of twelve he was baptized and became a member of the congregation at the Baptist church at Blackmill.
[1] In early life, he worked as a weaver before enrolling as a student at Pontypool Baptist College in 1879[citation needed].
In 1883, Griffiths was ordained as minister at Calfaria, Llanelli, where he remained for seven years.
In February 1889, Griffiths preached at Calfaria, Aberdare, where there was a vacancy following the death of its long-serving minister, Thomas Price the previous year.
[4] In 1898 the Welsh Baptist Union held its annual assembly at Calfaria, and in 1903 a new organ was purchased at a cost of £850.