Section 3. Marriage and divorce

The laws of the state relating to the
  capacity to  contract  marriage,  the  solemnization  of  marriage,  the
  annulment  of  the  marriage  contract,  and  divorce, are applicable to
  Indians; and subject to the jurisdiction of the peacemakers'  courts  of
  the  Seneca  nation  to  grant  divorces,  the  same  courts  shall have
  jurisdiction of actions  arising  thereunder.    But  Indians  who  have
  heretofore  contract  marriage  according to the Indian custom or usage,
  and shall cohabit as husband and wife, shall be deemed lawfully married.
  Indian  marriages  may  be  solemnized  by  peacemakers   within   their
  jurisdiction  with  the  same  force  and  effect as by a justice of the
  peace.