He probably has it all stashed in offshore accounts (hmm, those cost money to maintain that he wouldn't want to spend) or in his mattress at the homeless shelter.
At every family get-together we sit around and talk about my brother-in-law's legendary cheapness. He makes Jack Benny look like the greatest philanthropist. You remember that Seinfeld episode, where Kramer saves all his cans and bottles and drive to Michigan to cash in at 10¢ each. Well, brother-in-law did that in real life.
This guy goes to unbelievable extremes to save a nickel. He once had HIS OWN MOTHER push him in a wheelchair to the bus stop so that she could get on the bus with a "senior" discount and he could ride free as a "handicapped."
So she lived in a tiny little house, with adequate furnishings, shall we say "modest".
She'd always intended on making out a WILL, but just didn't get around to it and she was 74 when she died.
As fate would have it, the entire estate...well over a MILLION dollars in cash, plus home and furnishings, etc., are now passed on, by law...to her brothers and sisters. See?...One day, you come back on and let us know if I am right in your brother in law's case....
Regards,sw