side of a court, between open colonnades is unusual, being copied for a single other college (Emmanuel) by Christopher Wren. The original stained glass was destroyed by Parliamentarians in 1643, with only the east window's crucifixion scene (based on Rubens's Le Coup de Lance) surviving. The current side windows are by Max Ainmiller, and were added in 1855. The cloisters on each side of the Chapel date from the 17th century. Their design was classicised in 1709, while an ornamental porch was removed in 1755. The Peterhouse Partbooks, music manuscripts from the early years of the Chapel, survive, and are one of the most important collections of Tudor and Jacobean church music. The Chapel Choir, one of the smallest in Cambridge, has recently attracted wider interest for its regular performances of this material, some of which has not been heard since the 16th century. The restoration of the 1763 John Snetzler organ in the Chapel was by Noel Mander. The first person buried in the Chapel was Samuel Horne, a fellow of the college. Horne was probably chaplain. Gisborne Court Gisborne Court is accessible through an archway leading from the west side of Old Court. It was built in 1825-6. Its cost was met with part of a benefaction of 1817 from the Rev. Francis Gisborne, a former fellow. The court is built in white brick with stone dressings in a simple Gothic revival style from the designs of William McIntosh Brookes. Only three sides to the court were built, with the fourth side being a screen wall. The wall was demolished in 1939, leaving only its footing. Rooms in Gisborne Court are mainly occupied by undergraduates. Many previously housed distinguished alumni, including Lord Kelvin in I staircase. Whittle Building The Whittle Building, named after Petrean Frank Whittle, opened on the western side of Gisborne Court in early 2015. Designed in neo-gothic style by John Simpson Architects, it contains en-suite undergraduate accommodation, the student bar and common room, a function room and a gym. Its design recalls that of the original screen-wall that once stood in its place. Fen Court Beyond Gisborne Court is Fen Court, a 20th-century building partially on stilts. Fen Court was built between 1939 and 1941 from designs by H. C. Hughes and his partner Peter Bicknell. It was amongst the earliest buildings in Cambridge designed in the style of the Modern Movement pioneered by Walter