Unknown; likely a modern American elaboration of Latin roots.
Latiana is a modern American creation, likely formed by combining the popular prefix 'La-' with the name Tiana. Tiana itself is often a diminutive of Tatiana, a name of Latin origin derived from the Roman family name Tatius. As a contemporary coinage, it does not have a singular historical etymology but carries the rhythmic elegance of Latinate names.
Less common today
Latiana isn't in the latest US Top 1000. It last peaked at #7,371 in 1991.
US births per 5-year period, 1990βpresent (SSA data).