Gracious
A modern American creation likely formed by combining the popular prefix 'De-' with the name Shana. Shana itself is often a derivative of Jane or Shannon, ultimately tracing back to Hebrew roots meaning 'God is gracious'.
Less common today
Deshana isn't in the latest US Top 1000. It last peaked at #6,785 in 1991.
US births per 5-year period, 1990βpresent (SSA data).