Key: S=as a Spouse, C=as a Child, P=as a Parent
Names | 
Born | 
Died | 
| MACCUBBIN | ||
| DeborahS | ||
| MACKELFRESH | ||
| JaneP,P | born 1700, Anne Arundel Co., Maryland, (United States) | |
| MACUBBIN | ||
| DeborahS | ||
| ZachariahP | ||
| MAGA | ||
| DannyS,S | ||
| Kayla CheyenneC | ||
| MAGRUDER | ||
| ElizabethS | ||
| MAJORS | ||
| DeborahS | ||
| MALET | ||
| MabelP | born Abt 1195, Curry Malet, Somersetshire, England | |
| MALTRAVERS | ||
| EleanorS | born 1345 | died 10 Jan 1405 | 
| John, Lord MaltraversP | ||
| MAREDUDD AP OWAIN | ||
| Angharad verchP | ||
| MAREDYDD AP IEUAN | ||
| Janet verchS | ||
| MARSHAL | ||
| EveS,P,P | born Abt 1194, Pembroke Castle, Pembroke, Pembrokeshire, Wales | died Bef 1246, England | 
| MaudP | born Abt 1192, <Pembroke, Pembrokeshire, Wales> | died 27 Mar 1248, <Tintern Abbey, Chapel Hill, Monmouthshire, Wales> | 
| SibylS | born 1209, Pembroke, Pembrokeshire, Wales | died 27 Apr 1245 | 
| William, 1st Earl of Pembroke (Sir)P,P,P,P | born Abt 1146 | died 14 May 1219, Caversham, England | 
| MARSHALL | ||
| EvaS,P,P,S,P,P | born Abt 1194, Pembroke Castle, Pembroke, Pembrokeshire, Wales | died Bef 1246, England | 
| Jane CorneliaP | born 1741 | died 26 Sep 1810 | 
| MatildaP | born Abt 1192, <Pembroke, Pembrokeshire, Wales> | died 27 Mar 1248, <Tintern Abbey, Chapel Hill, Monmouthshire, Wales> | 
| William, 1st Earl of PembrokeP,P | born Abt 1146 | died 14 May 1219, Caversham, England | 
| MASSIE | ||
| Jeffrey, of TattonP | ||
| JoanS | born <Tatton, Cheshire>, England | |
| MATHEW | ||
| Joan, of Radyr, Glam.P | ||
| MAUDUIT | ||
| IsabelS | born Abt 1214 | died Bef 1268, <Nunnery of Cokehill, Worcestershire, England> | 
| William, Lord of Hanslope & Hartley Mauduit, Bucks.P | died Apr 1257 | |
| MAURICE | ||
| GwenllianP | ||
| MAUTRAVERS | ||
| EleanorS | born 1345 | died 10 Jan 1405 | 
| MCCOY | ||
| JohnS | born 1784, Ireland | died 26 Aug 1835, <Sistersville, > Tyler, (West) Virginia, United States | 
| MCGUIRE | ||
| ThomasS | ||
| MCKAY | ||
| JaneP | born 1638, Virginia, (United States) | died 7 Dec 1713, Prince George's Co., Maryland, (United States) | 
| MCLEAN | ||
| CatherineP | ||
| MCMECHAN | ||
| RachelS | ||
| MCMUNN | ||
| Eliza SmithS | born 23 Feb 1797, Washington Co., <Pennsylvania>, United States | died 10 Sep 1884, <Ironton>, Upper Twp, Lawrence, Ohio, United States | 
| JohnP | born Betw 1736 and 1782 | died 1853, Washington Co., Maryland, United States | 
| MEREDITH | ||
| Jonet verchS | ||
| MEREDITH AP BEDO | ||
| Howell Gôch ap, of GadfaP | born Bef 1567 | died <Gadfa, Rhiwargor, Llanwyddn, Montgomeryshire, Wales> | 
| MEREDYDD AP IEUAN AP ROBERT | ||
| Sioned verchS | ||
| MESCHINES | ||
| Hugh de, 5th Earl of ChesterP | born 1147, Kevelioc, Monmouthshire, Wales | died 30 Jun 1181, Leek, Staffordshire, England | 
| MICHEL | ||
| OwingsC,P,P | born 12 Feb 1745, Baltimore Co., Maryland, (United States) | died 17 May 1783, <Ohio (Brooke), (West) Virginia>, United States | 
| MIDDLETON | ||
| MaryP | ||
| MOHUN | ||
| Alice deP | born Abt 1222, <Dunster, Somersetshire>, England | |
| MOLINEUX | ||
| Richard (Sir)S | died 23 Sep 1459 | |
| MONMOUTH | ||
| Rohese deP | ||
| MONTACUTE | ||
| William de (Sir)S | born Abt 1360 | died 6 Aug 1383 | 
| William, 2nd Earl of SalisburyP | born 25 Jun 1328, Donyatt, Somerset, England | died 3 Jun 1397 | 
| MONTAGU | ||
| Alice, Countess of SalisburyP | ||
| MONTAGUE | ||
| JohnS | born Abt 1360 | died 6 Aug 1383 | 
| MONTFORT | ||
| Bertrade de, of EvreuxP | ||
| MOORE | ||
| Ruth PollyP | born Betw 1648 and 1652, St. Mary's, Calvert, Maryland, (United States) | died 1707, Prince George's Co., Maryland, (United States) | 
| MOREVILLE | ||
| Maude deP | born Abt 1264, <Kent>, England | |
| MORRIS | ||
| Ellis, of DolgunP | ||
| MargaretS | ||
| MORTIMER | ||
| Edmund de, 7th Baron Mortimer of Wigmore (Sir)C,P | born 1261, <Wigmore, Herefordshire>, England | died 17 Jul 1304, Wigmore, Herefordshire, England | 
| Isabel deS,C,P,S,C,P | died Bef 1 Apr 1292 | |
| Iseulde deC,C,C | born Abt 1270, <Wigmore, Herefordshire>, England | died 1328 | 
| Joane deS,C,P | died Bef 1 Apr 1292 | |
| Ralph de, Lord Mortimer of WigmoreP | born Abt 1190, <Wigmore, Herefordshire>, England | died 6 Aug 1246, Wigmore, Herefordshire, England | 
| Roger de, 8th Baron Mortimer of Wigmore, 1st Earl of March (Sir)S,C | born 25 Apr 1287 | died 29 Nov 1330 | 
| Roger de, of Wigmore, 1st Baron MortimerS,P | born Abt 1231, Cwmaron Castle, Radnorshire, Wales | died 27 Oct 1282, Kingsland, Herefordshire, England | 
| MOSTYN | ||
| Pyers, of TalacreP | ||
| MOUNTBATTEN | ||
| Philip, Prince of Greece and DenmarkS | ||
| MOUNTBATTEN-WINDSOR | ||
| Charles Philip Arthur George, Prince of WalesC | ||
| William Arthur Philip Louis (Prince)C | ||
| MOWBRAY | ||
| Ann de, 11th Baroness Mowbray, 12th Baroness SegraveC,C | born Abt 1472 | died 1481 | 
| Elizabeth, 6th Baroness StrangeC | died 1383 | |
| John de, 3rd Duke of NorfolkC | born 12 Sep 1415 | died 6 Nov 1461 | 
| John de, 4th Lord MowbrayP | born 13 Sep 1340, Bretby, Derby, England | died 9 Oct 1368, Constantinople (Istanbul), (Turkey) | 
| John de, Duke of NorfolkS,C | born 1392 | died 19 Oct 1432, Epworth | 
| John de, Earl of Nottingham, Duke of NorfolkC | born 18 Oct 1444 | died 17 Jan 1476 | 
| Margaret deC | ||
| Thomas de, 6th Lord Mowbray, 1st Duke of Norfolk (Sir)S,P | born 22 Mar 1366 | died 22 Sep 1399, Venice, Italy | 
| Thomas de, 4th Earl of NorfolkC | born 1385 | died 8 Jun 1405 | 
| MULHOLLAND | ||
| AileenC | ||
| Bud E.S | born 1884, Nebraska, United States | |
| Elizabeth MeholinS | born 1787 | died 1816 | 
| MUMMY | ||
| SamuelS | ||
| MUSCEGROS | ||
| Hawise de, of CharltonS,C,S,C | born 21 Dec 1276 | died After Jun 1340 By Dec 1350 | 
| John de, of Charlton (Sir)P | born 10 Aug 1232 | died 8 May 1275 | 
| Robert de, of Charlton, Somerset (Sir)S,P | born Abt 1252 | died 27 Dec 1280 | 
| MYERS | ||
| CatherineP | born <1830> | died <1918>, <<Stromsburg Cemetery, Stromsburg, Polk, Nebraska>, United States> |