Unsual quirky names here enjoy ...

Both this form and Quentin are authentic modern forms of the Roman family name Quintus. Your choice. In the US, this spelling lags behind Quentin and Quinton.

Alianna barely wedged its way into US Top 1000 in 2015, and almost fell off with a Number 998 finish in 2016. The second n doesn't add much, so Aliana or even Eliana might be better options.