He was noted for his parish ministry in Caernarfon, particularly for his educational work in building schools and helping to found the North Wales Training College.
After being educated at Ystrad Meurig, he studied at the University of Oxford, matriculating as a member of Jesus College on 29 March 1824 and obtaining a Bachelor of Arts degree in 1827.
[1] He then spent a year teaching in Liverpool before being ordained deacon by John Luxmoore, Bishop of St Asaph, on 20 July 1828.
[1] He became known as "Thomas of Caernarfon" and was noted for his pastoral work in a town that suffered from poverty and outbreaks of cholera.
In 1859, Thomas was appointed to Ruabon again, this time as vicar, and he spent three years there before moving to Llanrhaeadr-yng-Nghinmeirch, Denbighshire, in 1862.