in the cathedral since the Reformation. In 1849 Queen Victoria and Prince Albert paid an official visit to the cathedral. 20th century to the present Between 1909 and 1912 the medieval timber roofs over the choir and nave (which were found to be unsafe) were replaced with new oak roofs, under the direction of William Thomas Oldrieve, Architect for Scotland within the Office of Works. The weight of the roof was reduced by the substitution of copper sheeting for lead and slate, and the distinctive green copper roofing on the exterior of the nave and choir dates from that time. By 1938 the colours of the 'Munich Glass' had faded and the leading of the windows had deteriorated and needed to be replaced. The Society of Friends of Glasgow Cathedral decided that it should be replaced by works of the best contemporary artists. Queen Elizabeth The Queen Mother unveiled a window in 1954 in memory of the dead of the four Scottish divisions in World War I and World War II. In 1971 a memorial service was held in Glasgow Cathedral following the Ibrox Stadium disaster which claimed the lives of 66 football supporters. The funeral of First Minister Donald Dewar was held in the cathedral in October 2000. Elizabeth II attended services of thanksgiving at Glasgow Cathedral to mark her Silver Jubilee in 1977 and her Diamond Jubilee in 2012. Ministers of Glasgow Cathedral David Wemyss (1562-1615) Robert Scott (1616-1629) John Maxwell (1629-1639) Edward Wright (1641-1646) Robert Ramsay (1647-1651) James Durham (1651-1658) Ralph Rodger (1659-1662) Arthur Rose (1664-1675) Richard Waddell (1682-1684) Archibald Inglis (1685–1687) Ralph Rodger (1687–1689) James Brown (1690–1714) George Campbell (1715–1748) John Hamilton (1749–1780) William Taylor (1780–1823) Duncan Macfarlan (1824–1857) John Robertson (1858–1865) George Stewart Burns (1865–1896) Pearson McAdam Muir (1896–1915) James McGibbon (1916–1922) Lauchlan Maclean Watt (1923–1934) Nevile Davidson (1935–1967) William Morris (1967–2005) Laurence A. B. Whitley (2007–2017) Mark E. Johnstone (2019–present) Great Bell The great bell of the cathedral now stands on the floor of the cathedral as an object of interest rather than hanging in the tower. Its inscription says it was originally made in Holland in 1583 at the expense of Marcus Knox, a Glasgow merchant. It was broken in 1778 and recast in London in 1790 by Thomas Mears.Book of Days vol.2 p.49 by R. Chambers Music Glasgow Cathedral Choir is a professional adult ensemble, singing at the two regular Sunday services