Looking for Descendants of Thomas Morton M1 Rabina Oram M2 Mary Rockliff Evors

My link is Thomas & Rabina's son Thomas. He married Nancy Priestley in England, arrived in Perth 1841, was in Fiji somewhere between 1865 & 1875, died in Mackay Qld 1875. Love to hear from anyone with information on Thomas and/or his half brothers wh emigrated to Australia & New Zealand.