'But what does Scripture say? “Get rid of the slave woman and her son, for the slave woman’s son will never share in the inheritance with the free woman’s son.'.The pope is apparently showing his biblical knowledge here with a clear reference to Galatians 4:30: that Dafydd your son, who from Joan the daughter of Clementia and the king of England, your legal wife, should succeed in receiving your inheritance by right in all your possessions. Certainly your petition showed that since some detestable custom or rather corruption has developed in the land subject to your authority - as evidently the son of the slave girl could be the heir together with the son of the free woman and illegitimate sons could obtain the inheritance just as the legitimate - you and your Lord Henry, illustrious king of the English, beloved sons of Christ, have agreed in harmony and also further with the intervening authority of our beloved sons, our venerable brother Archbishop Stephen of Canterbury. Bringing about from us the attached petition.

regis Angliae uxore sua legitima suscepit, haereditario iure in omnibus bonis suis ei succedat.' - To the nobleman Lord Llywelyn of North Wales.

Confirmat statutum quod ipse in terra suae ditioni subiecta cum consensu Henrici regis Anglorum fecerat, consentientibus quoque Stephano Cantuariensi archiepiscopo S R E Cardinali et Pandulpho Norwiciensi electo Apostolicae Sedis Legato, contra abusum in eius terra introductum, ut illegitimi succederent in hereditates sicut et legitimi, ordinando ut David filius suus quem ex Iohanna filia cl. 'Nobili viro Lowelino domino Norwallie.This was in response to Llywelyn seeking the pope’s approval to declare his legitimate son ( Dafydd) his sole heir, to the detriment of his first-born illegitimate son ( Gruffudd): However, there is a much earlier mention of Clemence in a 1222 letter from Pope Honorious III which is recorded in the Vatican archives. Aprilis.' - The Lady Johanna of Wales died, the wife of Llywelyn, daughter of King John and Queen Clementia, 30 March.

'Obiit domina Johanna domina Walliae, uxor Lewelini filia regis Johannis et regina Clemencie, iii.It is often written that her mother's name is known only from Joan's brief obituary (1237) in the Tewkesbury Annals, where she is called 'Regina Clementina' (Queen Clemence): Little is known about her early life and historians have much debated the identity of her mother. Joan, Lady of Wales and Lady of Snowdon, also known by her Welsh name often written as Siwan (c. 1191/92 – February 1237) was the illegitimate daughter of King John of England, and became the wife of Llywelyn the Great, Prince of Wales (initially King of Gwynedd), effective ruler of all of Wales.

Joan, Lady of Wales by Danna R Messer