Verify/authenticate a will/a person's inheritance

When a Will is submitted for probate, it becomes a public document.  If there is no Will, the Judgment of Heirship will state the proportions of property passing to the various heirs.  Check the county probate records.  As to actual amounts, generally over a year must pass before a beneficiary or heir is entitled to seek an accounting.  This gives the person settling the estate some time to gather assets, pay bill and submit the final tax return.