Possibly from French bel ('beautiful') and mont ('mountain'), or from Italian bello and monte, meaning 'beautiful mountain' either way. Originally a surname and place name, later adopted as a given name.
Vibe
sophisticated
How it ages.
A surname name with a distinguished, old-money feel; still uncommon as a first name but sturdy and easy to wear.
The cultural moment.
Rare as a first name in the United States and the United Kingdom; better known as a place name and surname.