| | famname | Location | URL | Name | | Lubitz | Germany | | Jan Lubitz Sedore |
| Luck | Pittsylvania/Halifax Counties, V.A. | | Dayatra Shands |
| Luensmann | Germany,Rotenberg | genweb.net/gedcom/Ameliablue/Ameliablue.html | Leslie Mendez |
| Lummus | USA: SC, AL, MS, TX / Ireland | www.easy.com/fred_lummus | Fred Lummus |
| Luppens | USA, Belgium, Holland, Germany, France | www.geocities.com/Heartland/3127/ | Charles Luppens |
| Lyons | USA, CO, NE | www.geocities.com/Heartland/Meadows/2679 | Sharon Kelley |
| Lytle | SCT, IRE, USA, CAN | www.geocities.com/~lytle | Rik Vigeland |
| 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 |
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