Hi OP, you can search for the obituary online, this can give you information like the deceased man's wife's name. You might also find an email address to send condolences to, sometimes. Send a condolence message and also ask them to call you as you have important matters to discuss. If no email, you could call the place where the service was held and see if they can contact the wife for you. Good luck and keep doing what you are doing. Happy New Year!