Waldo was a poet, pacifist, teacher, prophet and conscientious objector. He was born in Haverfordwest and taught in many of the County's primary schools. He was well liked by his pupils and the people, but got into trouble with the authorities. He went to prison for refusing to pay taxes as a deliberate protest against war. He lived in Llandysilio but was a well-known figure throughout Pembrokeshire. He published a volume of poems 'Dail Pren' in 1956. His favorite poem was 'Preseli'. It was created while Waldo was a teacher in England, in response to the government's intention to use the Preseli as a military exercise ground. He was traveling around Pembrokeshire by bike. He lived a 'green life' before the people of the world began to think about the earth's needs. He believed strongly in equality and brotherhood.

Waldo predicted the short and long-term effects of World War II on people's lives on every continent. Women's lives, the world of technology, and our world of vision changed a great deal. There was no turning back - for the better, for the worse. RAF airfield was created at Tyddewi, a weapons storage depot at RNAD Trecwn, Sunderland aircraft were raided in Pembroke Dock and explosive tests were carried out at Rosebush and D Day exercises on the coast near Amroth. Pembrokeshire men battled flames in Swansea at The Blitz and mined coal with the Bevin Boys. Members of the Women's Army came from a distance to work on farms and to cut hills in our county. Nearly all villages lost boys, as in the Great War. This led to the respect for pacifists.

Discussing Waldo is an opportunity to learn about the importance of protecting peace. The work of the Society of Reconciliation and the Carmarthen White Book and the Temple of Peace within Wales, and the United Nations can be discussed worldwide.