| 271 | Katherine of York (14 August 1479-15 November 1527), parents: Edward IV and Elizabeth Wydeville |
| 272 | Katherine Plantagenet (-after 8 March 1485), parents: Richard III |
| 273 | Katherine Tudor (2 February 1503-1503), parents: Henry VII and Elizabeth of York |
| 274 | Katherine Wydeville (-before 1513), parents: Richard Wydeville and Jacquette de Luxembourg |
| 275 | Leonor de Castilla (1240-29 November 1290), parents: Fernando III "el Santo" and Jeanne de Dammartin |
| 276 | Lionel "of Antwerp" (29 November 1338-17 October 1368), Duke of Clarence, parents: Edward III and Philippa de Hainaut |
| 277 | Lionel de Welles (-29 March 1461), Lord Welles |
| 278 | Lodovico Visconti (September 1358-18 April 1381), Signore di Lodi |
| 279 | Louis II “de Mâle” (25 November 1330-30 January 1383), Count of Flanders, parents: Louis I and Marguerite de France |
| 280 | Louis XII (-), King of France |
| 281 | Madoc ap Iorwerth (-) |
| 282 | Madog (-), abbot of Conway, parents: Tudur Hen and Angharad |
| 283 | Mallt (-), parents: Madoc ap Iorwerth |
| 284 | Maredudd ap Tewdwr (-), parents: Tudur Fychan and Margaret |
| 285 | Margaret (-) |
| 286 | Margaret 'the Maid of Norway' (within a year previous to 9 April 1283-around 26 September 1290), parents: Eirik Magnusson and Margaret of Scotland |
| 287 | Margaret (Katherine?) (Tudor) (January 1437-young), parents: Owen Tudor and Catherine de France |
| 288 | Margaret Beaufort (31 May 1443-29 June 1509), parents: John Beaufort and Margaret de Beauchamp |
| 289 | Margaret Beaufort (-), parents: John Beaufort and Margaret de Holand |
| 290 | Margaret de Beauchamp (-shortly before 3 June 1482), parents: John Beauchamp of Bletsoe and Edith Stourton |
| 291 | Margaret de Holand (between 1381 and 1385-30 December 1439), parents: Thomas de Holand and Alice FitzAlan |
| 292 | Margaret Echingham (-) |
| 293 | Margaret Neville (around 1380-between 1413 and 1426), parents: Thomas Neville of Hornby |
| 294 | Margaret of Clarence (14 August 1473-28 May 1541), Ctss of Salisbury, parents: George of York and Isabel Neville |
| 295 | Margaret of England (1 October 1240-26/27 February 1274-5), parents: Henry III and Eleonore de Provence |
| 296 | Margaret of England (11 September 1275-1318 or after 11 March 1333), parents: Edward I “Longshanks” and Leonor de Castilla |
| 297 | Margaret of England (20 July 1346-soon after 1 October 1361), parents: Edward III and Philippa de Hainaut |
| 298 | Margaret of York (3 May 1446-16 April or 28 November 1503), parents: Richard of York and Cecily Neville |
| 299 | Margaret of York (10 April 1472-11 December 1472), parents: Edward IV and Elizabeth Wydeville |
| 300 | Margaret Percy (-) |