John Lloyd Williams (10 July 1854 – 15 November 1945) was a Welsh botanist, author, and musician. He was one of the founders of the Welsh Folk-Song Society (Cymdeithas Alawon Gwerin Cymru), established in 1906 to promote the collection and study of traditional Welsh folk songs, and became the first editor of the Society's Journal.Williams was born at Plas Isa, Llanrwst, a house that had once been owned by the 16th century translator, William Salesbury. He was the first of seven children; his parents were Robert Williams, a quarryman, and his wife Jane. Although largely uneducated herself, Jane Williams had an in terest in botany which she passed down to her son. In 1873, having first worked as a pupil teacher, he became a student at Bangor Normal College. In 1875, he was appointed head of the Board School at Garndolbenmaen.