 Duperouzel emigrated to the Channel Island of Jersey prior to 1848.He faced court accused of inducing a 10-year-old son of Elias Billot to rob his father on 5 September 1848 but the charge could not be substantiated and was later dropped.Duperouzel married his first wife Elizabeth [Betsey] Susanne Ferey 18 months later in March 1850 at St Helier.