He took up surveying after service in the British army , gaining the rank of lieutenant .
Captain Joseph Thomas ( 1803 -- ? ) was a British explorer and the chief surveyor for Lyttelton , Sumner and Christchurch in New Zealand .
Joseph Thomas took up surveying after service in the British army , gaining the rank of lieutenant .
Captain Joseph Thomas ( 1803 -- ? ) was a British explorer and the chief surveyor for Lyttelton , Sumner and Christchurch in New Zealand .