The Royal Humane Society awarded Sioa Taiulu its "In Memoriam Certificate" honouring his "courage and humanity" in his memory last April, but extensive efforts to track down his family have drawn a blank.
Society secretary Norman West said the Pau and Taiulu families were related, but he'd been unable to contact anyone from either family.
"Unfortunately, despite every endeavour I have made following many leads, I have been unable to trace them," he said. "I've done my best. I've talked to a lot of people"
Mr West said he hoped someone from Sioa Taiulu's family would come forward to receive the certificate.
"We're faced with throwing something out there in the hope one of your readers is a member of, or knows of someone from the extended family," he said.