Matthew Poole and continuators on 1 Kings 15:10

10 And forty and one years reigned he in Jerusalem: and his mothers name was Maachah, the daughter of Abishalom.

i. e. His Grand-Mothers, as appears from ver. 2. who is called his mother, as David is called Abijam's father, v. 3. and this Asa's father, ver. 11. And so the names of father, and mother, and sons, and daughters, are oft taken, both in Sacred and Prophane Authors, for Grand-Parents and Grand-Children. And his Grand-Mothers name may be here mentioned, rather than his Mothers, because his Mother was either an obscure person, or was long since dead, or indisposed, or unwilling to take care of the Education of her Son, and so he was Educated by the Grand-Mother, who, though she did Poison his Father Abijam with her Idolatrous Principles, ver. 12. yet could not infect Asa, nor with-hold him from prosecuting his good purposes of Reforming Religion. Which is here remembred to his praise.

Marginal references: That is, grandmother.