| 211 | Isabelle d’Angoulême (1187-31 May 1246), Ctss d’Angoulême |
| 212 | Ither Fychan (-) |
| 213 | James IV (17 March 1472-3-9 September 1513), King of Scots, parents: James III and Margaret (Margrete) of Denmark |
| 214 | Jan I (before 12 August 1283-10 November 1299), Count of Holland and Zeeland |
| 215 | Jane Grey (October 1537-12 February 1554), Queen of England, parents: Henry Grey and Frances Brandon |
| 216 | Jane Guilford (-) |
| 217 | Jasper Tudor (1431-21 December 1495), Duke of Bedford, parents: Owen Tudor and Catherine de France |
| 218 | Jean (-), Seigneur d'Arcis-sur-Aube et de Chacenay |
| 219 | Jean V "le Vaillant" (1339/40-1/2 November 1399), Duke of Brittany |
| 220 | Jeanne de Saint-Pol (-) |
| 221 | Joan (-after 20 January 1446), parents: Henry Beaufort and Alice FitzAlan |
| 222 | Joan "of Acre" (spring 1272-23 April 1307), parents: Edward I “Longshanks” and Leonor de Castilla |
| 223 | Joan Beaufort (-15 July 1445), parents: John Beaufort and Margaret de Holand |
| 224 | Joan Beaufort (1379-13 November 1440), parents: John of Gaunt and Katharine de Roët |
| 225 | Joan of England (22 July 1210-4 March 1237-8), parents: John and Isabelle d’Angoulême |
| 226 | Joan of England (5 July 1321-14 August 1362), parents: Edward II and Isabelle de France |
| 227 | Joan of England (probably 1334/35-2 September 1348), parents: Edward III and Philippa de Hainaut |
| 228 | Joan of England (October 1165-4 September 1199), parents: Henry II and Eleonore d'Aquitaine |
| 229 | Joan of England (early 1265-before 7 September 1265), parents: Edward I “Longshanks” and Leonor de Castilla |
| 230 | Joan of Gloucester (1384-16 August 1400), parents: Thomas "of Woodstock" and Eleanor de Bohun |
| 231 | Joan of Lancaster (1312-7 July probably 1349), parents: Henry "Tortcol/Wryneck" of Lancaster and Maud Chaworth |
| 232 | Joan of York (1438-1438), parents: Richard of York and Cecily Neville |
| 233 | João I "o Falso" (11 April 1358-14 August 1433), King of Portugal, parents: Pedro I "o Justiceiro" and Teresa Gille Lourenço |
| 234 | John (24 December 1166-18/19 October 1216), King of England, parents: Henry II and Eleonore d'Aquitaine |
| 235 | John "of Eltham" (before 24 August 1316-13 September 1336), Earl of Cornwall, parents: Edward II and Isabelle de France |
| 236 | John Basset (-) |
| 237 | John Basset (-), parents: John Basset and Honora Grenville |
| 238 | John Beauchamp of Bletsoe (-) |
| 239 | John Beaufort (between 1372 and 1375-16 March 1410), 1. Earl of Somerset, parents: John of Gaunt and Katharine de Roët |
| 240 | John Beaufort (1404-27 May 1444), Duke of Somerset and Earl of Kendal, parents: John Beaufort and Margaret de Holand |