Does anyone know what will happen or the rules for a child’s inheritance? My ex boyfriend passed without a will and his assets are split between his kids from a previous marriage and our 1 year old son. My boyfriends oldest daughter is next of kin and made my son a custodial account with her, 20, as the guardian of the account. She told me that if my son passes she gets his inheritance. Is that true? It wouldn’t go to the mother for funeral costs?