Under the Hindu Minority and Guardianship Act, 1956, a Hindu widow can appoint a testamentary guardian…

Section 9(3) of the Hindu Minority and Guardianship Act, 1956 allows "A Hindu widow entitled to act as the natural guardian of her minor legitimate children" to appoint a guardian for them by will. No court permission or relative's consent is needed, but a widow who cannot act as natural guardian cannot appoint one.