Twrch, the river, [524].

— Ỻawin, [514], [522].

— Trwyth, [509]–15, [519]–30, [534], [536]–9, [552], [565], [693].

twt, [592].

Twyn y moch, [536].

Twyne, Thomas, [412].

Ty Gwyn, [534].

Tydoch, 163.

tyđyn, tyn, 33.

Tyđyn y Barcud, 62.