Sweet Family Australia Are You Related I Have Family Documents to Give to Their Descendants

Sweet family documents for Oswald Sweet and Marie ( nee Laing, McDonald)
Married 1920's and I believe lived for a time at Oaklands Junction in Victoria.
Marie Laing / McDonald was a Scottish contralto who performed in Sydney and Melbourne. Her first husband Lachlan McDonald appears to have been a ship's officer and sadly he died in his late 20's ( I think, from documents I have). Marie then met & corresponded with Oswald Sweet, who appears to have been an accountant.

I would be most happy to 'freely' pass on to descendants / relatives the written documents and other items I have. The said documents were apparently left in storage, never collected.