Leslie Stephen,
Dictionary of National Biography…
(1896)
“ PITCAIRN, ROBERT (1747?–1770?) , midshipman, son of Major John Pitcairn of the marines, killed in the battle of Bunker's Hill, was born in Edinburgh about 1747. David Pitcairn [q. v.] was his younger brother. On 15 July 1766 he was entered as a midshipman on board the Swallow, then fitting out for a voyage of discovery under Captain Philip Carteret [q. v.] According to the Swallow's pay-book, he was then nineteen. ”
