Largo by John Travers (ca. 1703 – June 1758).
Travers was an English composer who held the office of Organist to the Chapel Royal from 1737 to 1758. Before filling several parochial posts in London he had been a choir boy at St. George's Chapel, Windsor and a pupil of Johann Christoph Pepusch.
Played on the original GrandOrgue organ before buying HW!