Hi Wingod
Do you have a Will yourself?
If you do... and passed away... then your distribution from you relative's estate would form part of your estate, and be distributed according to the terms of your Will (assuming no intervention from the Courts from anyone claiming they have no been adequately provided for in your Will).
Assuming you do not have a Will... then according to the rules of intestacy in NSW, assuming your children are issue of you and your spouse (and not carried forward from a previous relationship/marriage) then your whole estate including your distribution from you relative's estate would be distributed to your spouse.
In NSW, these rules are set out in the Succession Act (NSW) 2006.
CHAPTER 4 - INTESTACY
SUCCESSION ACT 2006 - SECT 112
Spouse’s entitlement where issue are also issue of the spouse
112 Spouse’s entitlement where issue are also issue of the spouse
If an
intestate leaves a spouse and issue and the issue are all also issue of the spouse, the spouse is entitled to the whole of the
intestate estate.
Kind regards