| Author | Titles | 1.
| Tranche, Esteban, 1944- | 1 | 2.
| Tranchini, Anita | 1 | 3.
| Tranchini, Marcello | 1 | 4.
| Trancoso, 2� Visconde de, 1842- ? | 1 | 5.
| Trancoso, Francisco | 1 | 6.
| Trancoso, Francisco D. F. C. | 1 | 7.
| Trancoso, Gonçalo Fernandes, 15 ?- ? | 3 | 8.
| Trancoso, Miguel | 1 | 9.
| Trancoso, Peres | 1 | 10.
| Trancoso, Teresa Maria | 1 |
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