Woodland or forest; wind
Keithan is a modern elaboration of the Scottish name Keith. It likely combines the traditional root, meaning 'wood' or 'forest', with the popular '-an' suffix to create a contemporary rhythmic sound.
Less common today
Keithan isn't in the latest US Top 1000. It last peaked at #3,243 in 1990.
US births per 5-year period, 1990βpresent (SSA data).