[4] In 1843, after his retirement from the Royal Navy, Wickham was made Police Magistrate and, later, Government Resident of the Moreton Bay District, in the Colony of New South Wales (NSW).

[6] Thomas married Sarah and their fifth son, Samuel Wickham, was born in 1664; he later settled in Rhode Island and became a Freeman of that Colony and a Deputy.

Benjamin was chosen by the Rhode Island colonial Assembly in 1756 to be Lieutenant-Colonel of a Regiment raised for the second expedition against Crown Point.

[5]: 2–3  Benjamin married Mary, daughter of Colonel John Gardner in 1743 and Samuel Wickham, their sixth and youngest son, was born at Newport, Rhode Island in 1758.

The Adventure and the Beagle were ordered to survey the coasts of the southern part of South America, including Patagonia and Tierra del Fuego.

[7]: 461 Wickham transferred to the Beagle in 1831 as First Lieutenant, under Captain Robert Fitzroy and first officer Philip Parker King (1791–1856), to complete the survey of Patagonia and Tierra del Fuego, as part of a circumnavigation of the globe.

[10] Some notable events:[11] In 1841, Wickham fell ill and resigned his command which was taken over by Stokes, who continued the survey and completed the voyage in 1843.