On 26 September 1903 the valley was declared a township and named Llandudno after the North Wales seaside resort of Llandudno, which means "Parish of Saint Tudno" in the Welsh language.
In 1903, on September 26th, the valley was officially recognized as a township and given the name Llandudno, inspired by the Welsh coastal town of Llandudno, meaning "Parish of Saint Tudno."