Lewis met with Jones, Lewis Valentine, Moses Griffith, Fred Jones and D. Edmund Williams in a café called Maes Gwyn during the 1925 National Eisteddfod in Pwllheli, Gwynedd, with the aim of establishing a "Welsh party". They founded ' ("National Party of Wales"), on 5 August 1925. The principal aim of the party would be to foster a Welsh-speaking Wales. To this end it was agreed that party business be conducted in Welsh, and that members sever all links with other British parties. Lewis insisted on these principles before he would agree to the Pwllheli conference.
Lewis met with Jones, Lewis Valentine, Moses Griffith, Fred Jones and D. Edmund Williams in a café called Maes Gwyn during the 1925 National Eisteddfod in Pwllheli, Gwynedd, with the aim of establishing a "Welsh party" They founded ' ("National Party of Wales"), on 5 August 1925. The principal aim of the party would be to foster a Welsh-speaking Wales. To this end it was agreed that party business be conducted in Welsh, and that members sever all links with other British parties. Lewis insisted on these principles before he would agree to the Pwllheli conference.