Modern invented name, likely a blend of Jaden and Cadence
Jaidence is a contemporary American coinage. It likely combines the popular 'Jay' prefix found in names like Jaden with the rhythmic suffix of Cadence, which refers to a flow of sounds or beats. As a modern invention, it does not have a traditional etymological root but follows current naming trends for rhythmic, multi-syllabic sounds.
Less common today
Jaidence isn't in the latest US Top 1000. It last peaked at #10,631 in 2016.
US births per 5-year period, 1990βpresent (SSA data).