Noble kind
A modern creative spelling of Allison, which originated as a French diminutive of Alice. It ultimately derives from the Germanic name Adalheidis, signifying noble status or character.
Less common today
Allizon isn't in the latest US Top 1000. It last peaked at #3,408 in 2010.
US births per 5-year period, 1990βpresent (SSA data).