I came across your posting whilst browsing through some forums I hadn't visited before. I thought the following may be of interest to you. I haven't done much work on the Studd side of my family yet other than a cursory search in the LDS database & don't know what happened to the male side after arriving in NSW.
Samuel Studd (b. c1810) & his wife "Hannah" (Maria Susanna)Barton (1811 - 1854) arrived Sydney on the "St Vincent" on 11 March 1849 with wife and 3 children, Sophia Maria (1830-1893), Samuel(b1835) & Maria (b1831), possibly from Colchester. Sophia Married my G-G-Grandfather, Henry Jaques on 26 June 1850. Maria married John Reynolds in 1852 & Samuel married Charlotte Guay (or Guy). Charlotte died in 1872.