The Breton form Judhael or Iudhael developed into Jouel or Jowel in England, which in turn developed into forms which are indistinguishable from forms of Joel.
  
  
- France
 
- 
- Latin
 
- ● 1101x1129 Judallus (nom) CartStPC XVI
 
 
- Wales
 
- 
- Latin
 
- ● 1216xc1226 Ithael (acc) Pryce-1st no. 16;
 1247 Itello (abl) ArchCambIII p. 228;
 1360 Itheli (dat) ibid. p. 165;
 1452 Ithel (nom) ibid. p. 72;
 1453 Ithel (nom) ibid. p. 69,
 Ithil (nom) ibid. p. 70;
 1455 Ithel (nom) ibid. p. 72;
 1456 Ithell (nom) ibid. p. 258;
 1497 Ithell (nom) ibid. p. 68
 
- Welsh
 
- ● 1544 Ithel RegCon1 p. 7
 
 
Cite as: S.L. Uckelman. "Ithel". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Ithel.