| famname | Location | URL | Name |
| Maass | Cologne, GE>Texas | | Ruby Donahue |
| Mabry | USA>GA | www.familytreemaker.com/users/g/a/r/Leona--Garcia-WA/ | Leona Kollman Garcia |
| Mackelfresh | USA | | Doris T. Goldsborough |
| Magnusson | Sweden to PA and NY | hometown.aol.com/hm8485/myhomepage/heritage.html | Laura Simonson |
| Mai | Deu>NY>OH>IL | www.familytreemaker.com/users/a/l/e/Melissa-T-Alexander/ | Melissa Thompson Alexander |
| Maier | Geiselberg, Bayern, Germany-USA | www.ice.net/~gwmeise/ | George Meisenbach |
| Malburg | Sweden to PA and NY | hometown.aol.com/hm8485/myhomepage/heritage.html | Laura Simonson |
| Marquart | USA | noble.cioe.com/~kaneka/Mqt-web1.htm | KaNeKa |
| Matter | DEU>PA>IL | members.aol.com/rogercubs/index.html | Roger Cramer |
| Maudsley | Yorks & Lancs, England + Qld, Australia | www.st.net.au/~pcooper/maudsley.htm | Pam Cooper |
| Maul | Germany & USA | members.tripod.com/~Silvie/Maul.html | Edmund G. Maul |
| Maxson | USA, Rhode Island, Michigan, Missouri | webusers.anet-stl.com/~cwward/genealogy.htm | |
| May | Deu>NY>OH>IL | www.familytreemaker.com/users/a/l/e/Melissa-T-Alexander/ | Melissa Thompson Alexander |
| Mayer | Geiselberg, Bayern, Germany-USA | www.ice.net/~gwmeise/ | George Meisenbach |
| Mazy | France, Belgium, LA, NC, TN, TX | www.familytreemaker.com/users/m/a/z/Kristen--M-Mazy/ | Kristen Mazy Fullmer |