I had contacted a couple Michigan offices and had gotten somewhat conflicting information. One said I'd need a court order, another had said that I just needed to contact their department of human services. I decided to take a chance and send in before trying the courts. There was a $26 non-refundable fee, but I figured it was worth a shot. Michigan replied and let me know I'd need to go through the courts unless it was a hundred years after his birth. That's not too far away, so I've been debating whether to be impatient and do it now, or wait another year or two.