I am sure he had some kind of financial adviser at the institution where he kept the bulk of his money. That might be an avenue as well, at least one I am sure LE explored.
I'm sure they have.

Thank goodness for LE that looks at everything!
Do you suppose there's any financial info available related to any changes to any of Mr. Harrod's insurance policies? Or even what automated payments to any policies- such as car insurance or house or flood insurance or that sort of thing were last made? Do we have that info?