Henry Massy (Massey) is recorded as a brother in the Clockmakers' Company in 1692 and was working until at least 1704. Examples of his work are illustrated in Dawson, Drover and Parkes, Early English Clocks, Woodbridge, 1982, p. 297, pl. 422 and p. 455, pl. 666. A fine silver-mounted tortoiseshell table clock by him was sold Christie's London, 5 July 2002, lot 89 (£94,650).