| famname | Location | URL | Name |
| Totten | DE>USA>WA | www.familytreemaker.com/users/g/a/r/Leona--Garcia-WA/ | Leona Kollman Garcia |
| Totton | DE>USA>WA | www.familytreemaker.com/users/g/a/r/Leona--Garcia-WA/ | Leona Kollman Garcia |
| Traver | MD, IL, USA | | Brian Hulleberg |
| Treadwell | US & CANADA | www.magicnet.net/~cwall/ | Charie Wall |
| Tredwell | US & CANADA | www.magicnet.net/~cwall/ | Charie Wall |
| Treff | Baltimore,MD,USA | members.aol.com/CarlTreff/twinoaks.html | Carl Treff |
| Trefz | Wuerttemburg, DE | | Bill Weaver |
| Trieux, du | U.S.A. & Canada | home.ica.net/~runesmith/gene/truax.html | Jennifer Smith |
| Trinkler | Switzerland, Aargau | | D. Butler |
| Troutman | Germany>PA>MD>KY & everywhere | www.interquest.de/~troutman/genealogy.html | Maria Troutman |
| Trow | South Africa | home.pix.za/dw/dw000002/index.htm | Dick Whitlock |
| Truax | U.S.A. & Canada | home.ica.net/~runesmith/gene/truax.html | Jennifer Smith |
| Truesdell and variations | England/Ireland>USA | www.geocities.com/Tokyo/Palace/7814/ | Paul E. Truesdell, Jr. |
| Truex and other varients | U.S.A. & Canada | home.ica.net/~runesmith/gene/truax.html | Jennifer Smith |
| Tscherne | Upper Lusatia, Germany + Qld & SA, Australia | www.st.net.au/~pcooper/mickan.htm | Pam Cooper |