Spear-ruler or modern invented name
Jerran is likely a modern American blend, possibly combining the prefix 'Jer-' from names like Gerald or Jeremy with the popular '-an' suffix. If viewed as a variant of Jeran or Jerron, it shares roots with the Germanic name Gerald, meaning 'ruler of the spear'.
Less common today
Jerran isn't in the latest US Top 1000. It last peaked at #4,836 in 1990.
US births per 5-year period, 1990βpresent (SSA data).