Career
Born about 1740, Humphrey began life as an engraver. In 1765 he obtained a premium from the Society of Arts for a mezzotint engraving of a self-portrait of Rembrandt. Later in life Humphrey concentrated on printselling.
He made journeys to Holland and elsewhere on the continent and had a penchant for collecting English portraits.
He became the chief agent for the major private collections of portraits made about this time. At one time he took Charles Howard Hodges, the engraver, to Amsterdam, where Hodges established himself.
Humphrey was residing at 227 Strand in 1785. He died probably about 1810 in a particular state of debt.