Are you talking about John Henry Leyden/Lyden who married Susannah McBride in Sydney in 1865, then, about 1880, somewhere, married Celia Teague nee Johnson?
How do you know he came from Georgetown, Bermuda? The town has never been stated on any documents.
Both before and after his marriage to Susannah, he was first a cook then a steward on board the Wesleyan mission ship John Wesley, for years. This ship traveled around the South sea islands, generally on the route Sydney, NZ, Tonga, Fiji, Sydney, and he must have become familiar with Tonga on his travels. Eventually he, Susannah, and 5 Australian born children went to Tonga, and lived in Vavau. There they had 3 more children, and Susannah died in 1875 in childbirth with the last daughter Susana. I do not know what happened after her death, but a few years later John Henry remarried to Celia Elizabeth Teague, born Johnson. They had another family.
As far as I know John Henry was never a butcher, but rather a steward on boats. He arrived in Australia on the Ship Phoebe in 1863, from London via Capetown.