Salvation
Iseah is a rare phonetic spelling variant of the Hebrew name Isaiah. It derives from the name Yeshayahu, which combines 'yasha' (to save) and 'yah' (referring to God). While the 'Isaiah' spelling is a perennial favorite, this specific variation is exceptionally uncommon in the United States.
Less common today
Iseah isn't in the latest US Top 1000. It last peaked at #5,225 in 2004.
US births per 5-year period, 1990βpresent (SSA data).