Supplanter
A modern American creative spelling of Jamison, which originally meant 'son of James.' The root name James is derived from the Hebrew name Jacob, referring to one who follows or supplants.
Less common today
Jaymison isn't in the latest US Top 1000. It last peaked at #4,430 in 2013.
US births per 5-year period, 1990βpresent (SSA data).