Judgment of the Court (Grand Chamber) of 21 December 2023.#GV v Chief Appeals Officer and Others.#Request for a preliminary ruling from the Court of Appeal.#Reference for a preliminary ruling – Citizenship of the European Union – Articles 21 and 45 TFEU – Right of Union citizens to move and reside freely in the territory of the Member States – Worker having acquired the nationality of the host Member State while retaining his or her nationality of origin – Directive 2004/38/EC – Article 3 – Beneficiaries – Article 2(2)(d) – Family member – Dependent direct relatives in the ascending line of a worker who is a Union citizen – Article 7(1)(a) and (d) – Right of residence for more than three months – Retention of the status of dependant in the host Member State – Article 14(2) – Retention of the right of residence – Regulation (EU) No 492/2011 – Article 7(2) – Equal treatment – Social advantages – Social assistance benefits – Unreasonable burden on the social assistance system of the host Member State.#Case C-488/21.