| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1841 | Trissie | Latin | Diminutive of Beatrice F: A variant of Beatrix meaning bringer of joy. In the Divine Comedy, Beatrice was Dante's guide through Paradise, perhaps inspired by Beatrice Portinari who was Dante's earliest love. | F | |
| 1842 | Trista | Latin | Full of sorrows. | F | |
| 1843 | Triste | Latin | Full of sorrows. | F | |
| 1844 | Trivia | Latin | Another name for Diana. | F | |
| 1845 | Trix | Latin | Diminutive of Beatrix: Bringer of joy, brings joy. Happy. | F | |
| 1846 | Trixie | Latin | Diminutive of Beatrix: Bringer of joy, brings joy. Happy. | F | |
| 1847 | Trixy | Latin | Happy. | F | |
| 1848 | Tryphaena | Latin | Delicate. | F | |
| 1849 | Tryphana | Latin | Delicate. | F | |
| 1850 | Tryphena | Latin | Delicate. | F | |
| 1851 | Tuccia | Latin | A Vestal Virgin. | F | |
| 1852 | Tulliola | Latin | Little Tullia. | F | |
| 1853 | Tutilina | Latin | Goddess of harvest. | F | |
| 1854 | Una | Latin | One. | F | |
| 1855 | Undina | Latin | Of the waves. | F | |
| 1856 | Undine | Latin | Of the waves. | F | |
| 1857 | Undinia | Latin | Of the waves. | F | |
| 1858 | Unelina | Latin | Bear. | F | |
| 1859 | Unique | Latin | Only one. | F | |
| 1860 | Urbana | Latin | Born of the city. | F | |