Isaac Manley joined Captain James Cook's first voyage on the 'Endeavour' as the master's servant. He continued in a career in the Royal Navy rising to the rank of admiral in 1830.
Source: Robson, John, 'The Men who Sailed with Captain James Cook' website, http://pages.quicksilver.net.nz/jcr/~cookmen1.html (sighted: 15/09/2008)