John Jones or Jac Glan-y-gors (1766-1821) was born at Glan-y-gors, Cerrigydrudion, Denbighshire. He went to London in 1789 and became either the manager or owner of the 'Canterbury Arms' at Southwark. He was a prominent member of the Gwyneddigion Society and a founding member of the Society of Cymreigyddion in 1795. Glan-y-gors is renowned for his satirical poems and ballads which reflected his radical views. In this ballad, Jac Glan-y-gors presents a satirical portrait of 'Betti o Lansantffraid' (Betti of Llansantffraid), a flighty and frivolous Welshwoman who falls prey to the fashions of London.

Source: Meic Stephens (ed.), 'Cydymaith i Lenyddiaeth Cymru' (Cardiff, 1997).