 The marriage did go ahead, and the following year Joan was forgiven and restored to her position as princess.Until 1230, Llywelyn had used the title "princeps Norwalliæ" 'Prince of North Wales', but from that year he changed his title to 'Prince of North Wales and Lord of Snowdonia', possibly to underline his supremacy over the other Welsh princes.He did not formally style himself 'Prince of Wales' although as J.E.