Kitto's Popular Cyclopedia of Biblial Literature
Abihail (Father of might, i.e. mighty). This name should be written Abichail. It was borne by several persons:
Abichail, the son of Huri, one of the family-chiefs of the tribe of Gad, who settled in Bashan (1 Chronicles 5:14).
Abichail, the father of Zuriel, who was the father of the Levitical tribes of Merari (Numbers 3:35).
Abichail, the father of Queen Esther, and brother of Mordecai (Esther 2:15).
Kitto, John, ed. Entry for 'Abihail'. "Kitto's Popular Cyclopedia of Biblial Literature". https://www.studylight.org/encyclopedias/eng/kbe/a/abihail.html.