Legal Question in Wills and Trusts in Texas

Call the life insurance company. If you're listed as a beneficiary, they'll walk you through the rest. Same with the bank.

If you have no starting information, a decedent's mail is typically a good place to begin, assuming that it is arriving at a place that you can access. Short of that, there is no national clearinghouse of information that you can search to locate what you're looking for. You either know it already, or you find it as a part of wrapping up the decedent's affairs.