- TACKETT 1 researcher
- TALL 1 researcher
- TANKARD 1 researcher
- TATMAN 1 researcher
- TAYLOR 6 researchers
- TEACKLE 1 researcher
- THOMAS 2 researchers
- THOMPSON 2 researchers
- THORNES 1 researcher
- THORNTON 1 researcher
- THOROWGOOD 1 researcher
- TILNEY 2 researchers
- TINDALL 1 researcherAlso see: TINGLE
- TINGLE 1 researcherAlso see: TINDALL
- TOADVINE 1 researcher
- TODD 1 researcher
- TOFT 1 researcher
- TOMPKINS 1 researcher
- TOPPING 1 researcher
- TOWNSEND 4 researchers
- TOWNSHEND 1 researcherAlso see: TOWNSEND
- TOWNSON 1 researcherAlso see: TOWNSEND
- TRACY 1 researcher
- TRADER 1 researcher
- TRAHERN 1 researcherAlso see: TREHEARN
- TRAVERS 1 researcher
- TRAVIS 1 researcher
- TREHEARN 1 researcher
- TREHEARNE 1 researcherAlso see: TREHEARN
- TREWETT 1 researcherAlso see: TRUITT
- TROWER 1 researcher
- TRUAX 1 researcher
- TRUITT 4 researchersAlso see: TREWETT
- TRUMBULL 1 researcher
- TUBBS 3 researchers
- TUDOR 1 researcher
- TULL 1 researcher
- TUNNELL 1 researcher
- TURLINGTON 1 researcher
- TURNER 3 researchers
- TURPIN 1 researcher
- TURVILL 1 researcher
- TWIFORD 1 researcherAlso see: TWYFORD
- TWYFORD 1 researcherAlso see: TWIFORD
- TYLER 1 researcher
- TYSON 1 researcher
