Name
- Thomas, Humphrey1
- Thomas, John, Reverend; Schoolmaster of Beaumaris1
- Thomas, Morys1
- Thomas, Robert, of Llanfair Talhaiarn1
- Trevor, Edward1
- Trevor, John, of Add MS 148911
- Tyssilio1
- University of Oxford1
- Ussher, James, Archbishop of Armagh, 1581-1656, http://isni.org/isni/000000...1
- Vaughan, John, of Add MS 148881
- Vaughan, Thomas, of Add MS 148801
- Warburton, John, English antiquarian, cartographer and herald, 1682-1759, http://viaf.org/viaf/27696061
- William Penllyn1
- William ab Hywel ab Thomas1
- William ab Rees1
- William ab W-1
- William, Davydd1
- William, Harri1
- Williams, David, alias Davydd Emlyn1
- Williams, Edward, alias Jorwerth Morganwg, alias Jorwerth Gwilym1