Modern invented name, possibly meaning big settlement or fair town
Treveion is a modern American coinage, likely created by combining the Welsh prefix 'Tre-' (meaning town or settlement) with the suffix '-veion' or '-vion'. It may also be a creative variation of the name Trevon or Traveon, which are themselves modern blends.
Less common today
Treveion isn't in the latest US Top 1000. It last peaked at #7,338 in 2000.
US births per 5-year period, 1990βpresent (SSA data).