Little fire
Aaidyn is a modern creative spelling of the Gaelic name Aidan. It is derived from the Old Irish name AodhΓ‘n, which is a diminutive of Aodh, the name of the Celtic god of sun and fire.
Less common today
Aaidyn isn't in the latest US Top 1000. It last peaked at #7,464 in 2015.
US births per 5-year period, 1990βpresent (SSA data).