Are you planning for the future of your survivors?
Not right now.
Unfortunately, no relevant information is found.
But I want to know if my family would get any help from Social Security after my passing.
yes, Social Security can help your family if you have earned enough credits through your work.
Do you also know about if ever the adult child is already receiving disability benefits in his own record, can he still get benefits on my record?
He still should check if he can get benefits on his parent's record. Higher benefits might be payable and he could be entitled to receive Medicare.
If I am widowed, at what age can I have benefits and for what benefits?
She can get reduced benefits as early as age 60 or full benefits at full retirement age. If she's 50 years old she could get the benefits if she's disabled and her disability started 7 years or earlier before your death.
what if she remarries after my death?
if she remarries after age 60, 50 if disabled, she would still qualify for the benefits on your social security records.
And if she receives a pension not covered by Social Security?