| Families |
Ethnic Group |
Branch of |
| Taggart |
|
MacTaggart |
| Taylor |
|
Cameron |
| Taylor |
IVL - Ireland, South Scotland |
|
| Taylor, MacIntaylor |
|
Cameron |
| Teeling |
Normans |
|
| Thomason |
|
MacFarlane |
| Thompson, Tawesson |
|
Campbell |
| Tiernan |
IVL - Mayo, Roscommon, Westmeath |
|
| Tobin |
Normans |
|
| Tonnochy |
|
Robertson |
| Tosh, Tossack |
|
MacKintosh |
| Toward, Towart |
|
Lamont |
| Turner |
|
Lamont |
| Turner |
IVL - South Scotland |
|
| Tyre |
|
MacIntyre |
| Tyrie |
Cuithne |
|
| Ultagh |
|
MacDonlevy |
| Urquhart |
|
Forbes |
| Waldron |
|
MacCostello |
| Waldron |
IVL - Meath |
|
| Wall, Faltagh |
Normans |
|
| Walsh |
IVL - Ireland |
|
| Walsh |
Normans |
|
| Weir |
|
MacFarlane |
| Weir |
|
MacNaughton |
| Weir |
IVL - Ireland |
|
| Wemyss, Weems |
|
MacDuff |
| Whelan |
|
O'Phelan |
| Whelan |
IVL - Ulster |
|
| White |
|
Lamont |
| White |
|
MacGregor |
| White |
IVL |
|
| Wier |
|
Buchanan |
| Wier |
IVL - North Ireland |
|
| Williamson |
|
MacKay |
| Williamson |
IVL - South Scotland, Angus |
|
| Wilson |
|
Innes |
| Wilson |
IVL - South Scotland |
|
| Wilson, Williamson |
|
Gunn |
| Wright |
|
MacIntyre |
| Wright |
IVL - Ireland, South Scotland |
|
| Yule, Yuill |
|
Buchanan |
| Yule, Yuill |
IVL - Angus, Aberdeen |
|
| Yunie |
|
Innes |
|
