Validation of certain marriages already solemnised

All marriages solemnised before the commencement of this Act that by virtue of section 15 would have been valid and lawful if this Act had been in force when they were solemnised shall be deemed to have been and to be valid and lawful, and the issue born of any such marriage (whether born before or after the commencement of this Act) shall be deemed to have been born in lawful wedlock: provided that where either of the parties to any such marriage has thereafter during the lifetime of the other party to the marriage and before the commencement of this Act lawfully married any other person, the first marriage shall be deemed to have been dissolved immediately before the solemnisation of the second marriage: provided also that this section shall not affect any estate, right, or interest in any real or personal property to which any person has become absolutely entitled before the commencement of this Act, or affect any proceedings commenced in any court before the commencement of this Act, or any decree, order, or judgment made or given (whether before or after the commencement of this Act) in any such proceedings.