Of the mountain
A modern American creation likely blending the prefix 'Del' with the name 'Devonte' or the Italian/Spanish word 'monte'. It is often interpreted as meaning 'of the mountain' or 'from the mountain'.
Less common today
Delvonte isn't in the latest US Top 1000. It last peaked at #2,695 in 1993.
US births per 5-year period, 1990βpresent (SSA data).