Jehu met some brothers of Ahaziah king of Judah and said, “Who are you?”

They answered, “We are the brothers of Ahaziah. We are going down to greet the children of the king and the children of the queen-mother.” Bible

“brothers.” In this context, “brothers” can mean, and probably does mean, relatives, not actual brothers.

“queen-mother.” The Hebrew word translated “queen-mother” is gebereth (#01404 גְּבֶרֶת), and in this context the “queen-mother” is the mother of the king (BDAG Hebrew-English lexicon). The Queen-mother was the most powerful woman in the kingdom, much more powerful than any of the wives of the king, who often did not have much real power at all.

Commentary for: 2 Kings 10:13