law: Indian Divorce Act, 1869 
  21. Children of annulled marriage 
  Where a marriage is annulled on the ground that a former husband
  
  or wife was living, and it is adjudged that the subsequent marriage was
  
  contracted in good faith and with the full belief of the parties that the
  
  former husband or wife was dead, or when a marriage is annulled on the ground
  
  of insanity, children begotten before the decree is made shall be specified in
  
  the decree, and shall be entitled to succeed, in the same manner as legitimate
  
  children, to the estate of the parent who at the time of the marriage was
  
  competent to contract.