The Peregrine was a ferry between Auckland and Devonport - see articles on Papers Past searching under combinations of Captain Clark, Thomas Watson Clark, Peregrine etc. http://paperspast.natlib.govt.nz/cgi-bin/paperspast
. In an article regarding his retirement it is stated that Thomas Watson CLARK arrived as bo'sun on the Bravo in 1866 and that he was Commodore of the Devonport Ferry Company, also makes reference to 'an exciting time blockade running during the American Civil War'.
On the Auckland Council Heritage Images you will find images of the Peregrine http://www.aucklandcity.govt.nz/dbtw-wpd/heritageimages/inde...
The births of six chldren are recorded on NZ Births, Deaths & Marriages where you should also be able to find the marriages/deaths of the children to look forward for descendants. https://www.bdmhistoricalrecords.dia.govt.nz/
Hope some of this helps