What with a Bank account after death?

As a rule, we have the knowledge about the Bank that our parents have personal accounts.

But when we came out, it is not so obvious.

Even if the documents of the deceased found information about its personal account and so make sure that he had no other Bank account or Deposit.

That is, the final court decision finding the acquisition lapses or notarial deed confirming the inheritance.

the date of death of the account owner, his social security number, his father's name, mother's maiden name (for women).

Each Bank itself defines.