It seems that Richard Underwood did not come out to New South Wales with his parents in 1807. As he is not listed in the 1814 Muster it is thought he may have arrived in 1817 with his grandmother aboard the Harriet. In 1819 he returned to England with his father for two years. When he returned he became a publican in Tasmania. He married Maria Goodwin in 1825.
'Underwood, Richard (1801–1830)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/underwood-richard-25356/text33769, accessed 24 March 2023.