Section 21(1)(a) in All India Services (Death-Cum-Retirement Benefits) Rules, 1958
(a)"family" shall include the following relatives of the member of the Service:-(i)Wife or husband;(ii)sons;(iii)unmarried and widow daughters;(iv)brothers below the age of 18 years, and unmarried or widowed sisters;(v)Father;(vi)mother;(vii)married daughters; and(viii)children of a pre-deceased son.